Answer: Answer: We can observe that the product of the slopes are -1 and the y-intercepts are different The given pair of lines are: In Exercises 3 6, think of each segment in the diagram as part of a line. Answer: Question 40. In Exercises 13-18. decide whether there is enough information to prove that m || n. If so, state the theorem you would use. We can conclude that 4 and 5 angle-pair do not belong with the other three, Monitoring Progress and Modeling with Mathematics. Slope of line 1 = \(\frac{-2 1}{-7 + 3}\) Hence, from the above, y = \(\frac{1}{2}\)x 4, Question 22. \(\frac{1}{2}\)x + 7 = -2x + \(\frac{9}{2}\) 2x + \(\frac{1}{2}\)x = 5 y = -2 (-1) + \(\frac{9}{2}\) An equation of the line representing the nature trail is y = \(\frac{1}{3}\)x 4. By using the Consecutive Interior angles Converse, HOW DO YOU SEE IT? Answer: The Converse of the Alternate Exterior Angles Theorem states that if alternate exterior anglesof two lines crossed by a transversal are congruent, then the two lines are parallel. m1m2 = -1 Hence those two lines are called as parallel lines. Answer: Question 22. Explain. Answer: Slope of AB = \(\frac{-4 2}{5 + 3}\) So, In Exercises 3 and 4. find the distance from point A to . Big Ideas Math Geometry Answers Chapter 3 Parallel and Perpendicular Lines 2 = 180 123 From the figure, Question 11. The Alternate Interior Angles Theorem states that, when two parallel lines are cut by a transversal, the resultingalternate interior anglesare congruent These worksheets will produce 6 problems per page. alternate interior She says one is higher than the other. Two nonvertical lines in the same plane, with slopes m1 and m2, are parallel if their slopes are the same, m1 = m2. Answer: = \(\sqrt{30.25 + 2.25}\) We can conclude that x and y are parallel lines, Question 14. So, The representation of the parallel lines in the coordinate plane is: Question 16. We have to find 4, 5, and 8 The slope of first line (m1) = \(\frac{1}{2}\) We can observe that the slopes are the same and the y-intercepts are different Hence,f rom the above, m2 and m4 The parallel lines have the same slope but have different y-intercepts and do not intersect P(3, 8), y = \(\frac{1}{5}\)(x + 4) Slope of the line (m) = \(\frac{-1 2}{3 + 1}\) The equation that is parallel to the given equation is: 2 = \(\frac{1}{4}\) (8) + c We can conclude that the value of x when p || q is: 54, b. 8 = 65 Hence, from the above, Parallel, Intersecting, and Perpendicular Lines Worksheets y = \(\frac{137}{5}\) = 104 Answer: x = 97, Question 7. \(\frac{5}{2}\)x = 2 We can observe that the given angles are consecutive exterior angles The given figure is: Parallel Curves We know that, Answer: It is given that 4 5. We can say that all the angle measures are equal in Exploration 1 Find the Equation of a Perpendicular Line Passing Through a Given Equation and Point = \(\sqrt{31.36 + 7.84}\) The sum of the angle measures are not supplementary, according to the Consecutive Exterior Angles Converse, The values of AO and OB are: 2 units, Question 1. Hence, from the above, m a, n a, l b, and n b Answer: The symbol || is used to represent parallel lines. We know that, It is not always the case that the given line is in slope-intercept form. The parallel line equation that is parallel to the given equation is: X (-3, 3), Y (3, 1) According to the Consecutive Interior Angles Theorem, the sum of the consecutive interior angles is 180 The given point is: (1, 5) Answer: THOUGHT-PROVOKING a.) a. y = mx + b We use this and the point \((\frac{7}{2}, 1)\) in point-slope form. Art and Culture: Abstract Art: Lines, Rays, and Angles - Saskia Lacey 2017-09-01 Students will develop their geometry skills as they study the geometric shapes of modern art and read about the . Answer: So, PDF Parallel and Perpendicular Lines : Shapes Sheet 1 - Math Worksheets 4 Kids If you need more of a review on how to use this form, feel free to go to Tutorial 26: Equations of Lines Proof of Converse of Corresponding Angles Theorem: Intersecting lines share exactly one point that is where they meet each other, which is called the point of intersection. The point of intersection = (\(\frac{7}{2}\), \(\frac{1}{2}\)) The lines that have the same slope and different y-intercepts are Parallel lines Answer: y 3y = -17 7 In Exercises 5-8, trace line m and point P. Then use a compass and straightedge to construct a line perpendicular to line m through point P. Question 6. From the figure, 2y + 4x = 180 (x1, y1), (x2, y2) Hence, from the above, To find the value of b, -4 = -3 + c Check out the following pages related to parallel and perpendicular lines. Hence, from the above figure, Answer: We can conclude that the midpoint of the line segment joining the two houses is: We have to keep the lengths of the length of the rectangles the same and the widths of the rectangle also the same, Question 3. If parallel lines are cut by a transversal line, thenconsecutive exterior anglesare supplementary. Another answer is the line perpendicular to it, and also passing through the same point. The given figure is: d = \(\sqrt{41}\) How would your 1 = -18 + b We know that, y = \(\frac{1}{2}\)x 2 5 = 105, To find 8: A (x1, y1), and B (x2, y2) From the given figure, c = 3 So, Now, Answer: Question 28. ABSTRACT REASONING We know that, Answer: Question 18. Definition of Parallel and Perpendicular Parallel lines are lines in the same plane that never intersect. So, We can conclude that the value of XY is: 6.32, Find the distance from line l to point X. x = 35 Hence, from he above, Answer: The given diagram is: In Exercises 11-14, identify all pairs of angles of the given type. The coordinates of the line of the first equation are: (-1.5, 0), and (0, 3) c = -12 In Example 5. yellow light leaves a drop at an angle of m2 = 41. By using the Corresponding Angles Theorem, 1 (m2) = -3 This page titled 3.6: Parallel and Perpendicular Lines is shared under a CC BY-NC-SA 3.0 license and was authored, remixed, and/or curated by Anonymous. -2 . For example, the letter H, in which the vertical lines are parallel and the horizontal line is perpendicular to both the vertical lines. Hence, from the above, All ordered pair solutions of a vertical line must share the same \(x\)-coordinate. Answer: 8x = 112 E (x1, y1), G (x2, y2) The given figure is: Now, From the above figure, y = \(\frac{2}{3}\) (- 5, 2), y = 2x 3 So, The given coordinates are: A (-2, 1), and B (4, 5) In the diagram below. 1 = 76, 2 = 104, 3 = 76, and 4 = 104, Work with a partner: Use dynamic geometry software to draw two parallel lines. (1) = Eq. We know that, y = 3x + 2 We can conclude that the distance between the given 2 points is: 17.02, Question 44. 1 4. The consecutive interior angles are: 2 and 5; 3 and 8. We know that, Substitute A (3, -4) in the above equation to find the value of c Label the point of intersection as Z. The given figure is: d = 364.5 yards So, So, c. All the lines containing the balusters. Prove: t l. PROOF Now, 4 and 5 Unit 3 parallel and perpendicular lines homework 7 answer key = 2, The slope of line c (m) = \(\frac{y2 y1}{x2 x1}\) The slope that is perpendicular to the given line is: Question 16. If the slope of two given lines are negative reciprocals of each other, they are identified as perpendicular lines. The sides of the angled support are parallel. Let the given points are: So, Answer: Answer: Thus the slope of any line parallel to the given line must be the same, \(m_{}=5\). y = -7x 2. We can conclude that the value of x is: 20, Question 12. y = -2x + c1 Answer: We can conclude that the perpendicular lines are: (-1) (m2) = -1 From the figure, If the corresponding angles are congruent, then the lines cut by a transversal are parallel b is the y-intercept Parallel and Perpendicular Lines Worksheet - Mausmi Jadhav - TemplateRoller 3.6 Slopes of Parallel and Perpendicular Lines - GEOMETRY Substitute (6, 4) in the above equation We can conclude that the consecutive interior angles are: 3 and 5; 4 and 6, Question 6. From the given figure, The parallel lines have the same slopes y = \(\frac{3}{2}\)x 1 From the given coordinate plane, y = \(\frac{7}{2}\) 3 m2 = -1 y = -2x + c = \(\sqrt{(4 5) + (2 0)}\) Question 4. Answer: So, So, The representation of the given pair of lines in the coordinate plane is: We know that, State the converse that c = -13 Similarly, observe the intersecting lines in the letters L and T that have perpendicular lines in them. 1 = 0 + c X (-3, 3), Z (4, 4) We can conclude that the equation of the line that is parallel to the line representing railway tracks is: The Corresponding Angles Postulate states that, when two parallel lines are cut by a transversal, the resulting corresponding anglesare congruent line(s) PerPendicular to . = \(\sqrt{(-2 7) + (0 + 3)}\) We can observe that all the angles except 1 and 3 are the interior and exterior angles y = -x + c Answer: So, So, Hence, Where, m2 = -3 5 = 4 (-1) + b Answer: The diagram can be changed by the transformation of transversals into parallel lines and a parallel line into transversal If you go to the zoo, then you will see a tiger The given point is: A (8, 2) Exercise \(\PageIndex{5}\) Equations in Point-Slope Form. Hence, from the above, then they are parallel. Write the equation of a line that would be parallel to this one, and pass through the point (-2, 6). From the above table, Hence, Hence, from the above, Now, y = \(\frac{3}{2}\) + 4 and y = \(\frac{3}{2}\)x \(\frac{1}{2}\) CONSTRUCTION The given lines are the parallel lines Hence, from the given figure, We know that, We know that, These Parallel and Perpendicular Lines Worksheets will ask the student to find the equation of a perpendicular line passing through a given equation and point. Select all that apply. Given: k || l Write the equation of the line that is perpendicular to the graph of 53x y = , and If we see a few real-world examples, we can notice parallel lines in them, like the opposite sides of a notebook or a laptop, represent parallel lines, and the intersecting sides of a notebook represent perpendicular lines. A(- 3, 2), B(5, 4); 2 to 6 Answer: Identify the slope and the y-intercept of the line. 2x = 180 c = -2 The representation of the Converse of Corresponding Angles Theorem is: b. Alternate Interior Angles Theorem (Theorem 3.2): If two parallel lines are cut by a transversal, then the pairs of alternate interior angles are congruent. Answer: We can conclude that the parallel lines are: c = \(\frac{1}{2}\) These worksheets will produce 6 problems per page. Answer: We know that, A bike path is being constructed perpendicular to Washington Boulevard through point P(2, 2). We can observe that So, 8 6 = b The distance between lines c and d is y meters. 8x = (4x + 24) Now, The equation of the line that is parallel to the given equation is: -1 = \(\frac{1}{2}\) ( 6) + c From the given coordinate plane, So, A(8, 0), B(3, 2); 1 to 4 Parallel to \(x+y=4\) and passing through \((9, 7)\). So, y = mx + c The given figure is: So, In Exercises 19 and 20. describe and correct the error in the conditional statement about lines. So, Hence, from the above, x = 23 Question 43. 3 (y 175) = x 50 Answer: Question 36. Answer: Question 32. According to the Converse of the Corresponding Angles Theorem, m || n is true only when the corresponding angles are congruent We know that, (a) parallel to the line y = 3x 5 and Substitute (4, -3) in the above equation So, c. m5=m1 // (1), (2), transitive property of equality Substitute P(-8, 0) in the above equation 42 and (8x + 2) are the vertical angles x = \(\frac{153}{17}\) The given point is: A(3, 6) Hence, from the above, The 2 pair of skew lines are: q and p; l and m, d. Prove that 1 2. Now, Two nonvertical lines in the same plane, with slopes m1 and m2, are parallel if their slopes are the same, m1 = m2. The perpendicular bisector of a segment is the line that passes through the _______________ of the segment at a _______________ angle. Question 39. Hence, from the above, Compare the given points with y = \(\frac{1}{2}\)x 6 The diagram that represents the figure that it can not be proven that any lines are parallel is: The equation of the line that is parallel to the given line equation is: 8 = \(\frac{1}{5}\) (3) + c Hence, from the above, Proof of the Converse of the Consecutive Interior angles Theorem: The given figure is: Step 3: y = \(\frac{1}{7}\)x + 4 Lines l and m are parallel. The given points are: Solve each system of equations algebraically. We can observe that, So, Answer: From the given figure, m2 = \(\frac{2}{3}\) According to the Perpendicular Transversal Theorem, a. The LibreTexts libraries arePowered by NICE CXone Expertand are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. y = 3x + 9 -(1) Identify an example on the puzzle cube of each description. For a pair of lines to be coincident, the pair of lines have the same slope and the same y-intercept We can conclude that the tallest bar is parallel to the shortest bar, b. The given figure is: The converse of the given statement is: Hence, from the above, The equation of the line that is parallel to the given line is: Prove \(\overline{A B} \| \overline{C D}\) XY = \(\sqrt{(4.5) + (1)}\) The equation that is perpendicular to the given line equation is: z x and w z x z and y z Explain your reasoning. In the diagram, how many angles must be given to determine whether j || k? We can observe that Expert-Verified Answer The required slope for the lines is given below. The map shows part of Denser, Colorado, Use the markings on the map. So, Where, 2x = 108 We can observe that, The equation for another perpendicular line is: Hence, from the above, We can observe that What is the relationship between the slopes? PROBLEM-SOLVING Slope of line 2 = \(\frac{4 + 1}{8 2}\) Answer: (D) A, B, and C are noncollinear. Question 4. Question 13. How are they different? Now, x = \(\frac{87}{6}\) So, We can conclude that the value of x is: 54, Question 3. According to the Transitive Property of parallel lines, Hence, from the above, 1 and 5 are the alternate exterior angles By using the Consecutive Interior Angles Theorem, The equation for another parallel line is: 17x + 27 = 180 y = -x -(1) Hence, from the above, Here the given line has slope \(m=\frac{1}{2}\), and the slope of a line parallel is \(m_{}=\frac{1}{2}\). You and your family are visiting some attractions while on vacation. Explain your reasoning. We get Hence, The representation of the Converse of the Exterior angles Theorem is: d. Consecutive Interior Angles Theorem (Theorem 3.4): If two parallel lines are cut by a transversal. Answer: 2 = 150 (By using the Alternate exterior angles theorem) = 0 XY = 6.32 We can conclude that the distance from line l to point X is: 6.32. FSE = ESR So, We can conclude that the perpendicular lines are: Now, The given equation is: So, The representation of the parallel lines in the coordinate plane is: In Exercises 17 20. write an equation of the line passing through point P that is perpendicular to the given line. We can conclude that, y = \(\frac{1}{2}\)x + 5 Question 27. 1 and 4; 2 and 3 are the pairs of corresponding angles The given figure is: From the given figure, The given table is: then they are supplementary. x 6 = -x 12 The equation of a straight line is represented as y = ax + b which defines the slope and the y-intercept. Substitute the given point in eq. c = 5 \(\frac{1}{2}\) A(0, 3), y = \(\frac{1}{2}\)x 6 x = 54 if two lines are perpendicular to the same line. Draw the portion of the diagram that you used to answer Exercise 26 on page 130. So, By using the Consecutive interior angles Theorem, y = 3x + c To find the value of b, Hence, from the above, We know that, Hence, from the above, = 1 So, Answer: Hence, from the above, y = -2x + \(\frac{9}{2}\) (2) Parallel and perpendicular lines have one common characteristic between them. In diagram. How can you write an equation of a line that is parallel or perpendicular to a given line and passes through a given point? Determine whether the converse is true. Now, Section 6.3 Equations in Parallel/Perpendicular Form. Compare the given equations with We know that, So, So, Question 1. The equation that is perpendicular to the given line equation is: y = mx + c We can conclude that It is given that 1 = 58 MODELING WITH MATHEMATICS -5 = \(\frac{1}{4}\) (-8) + b If the slopes of the opposite sides of the quadrilateral are equal, then it is called as Parallelogram Now, Then, by the Transitive Property of Congruence, c.) Book: The two highlighted lines meet each other at 90, therefore, they are perpendicular lines. y = \(\frac{1}{2}\)x + 2 COMPLETE THE SENTENCE Answer: The coordinates of line a are: (2, 2), and (-2, 3) From the given figure, 5 7 By measuring their lengths, we can prove that CD is the perpendicular bisector of AB, Question 2. x + 2y = 10 The distance wont be in negative value, We can conclude that the value of x is: 90, Question 8. We can conclude that m || n by using the Consecutive Interior angles Theorem, Question 13. So, MAKING AN ARGUMENT Get Algebra 1 Worksheet 3 6 Parallel And Perpendicular Lines Prove: t l = 0 (y + 7) = (3y 17) We can observe that the given angles are the corresponding angles For a vertical line, Hence, To find the value of c, Answer: The slope of second line (m2) = 2 This contradiction means our assumption (L1 is not parallel to L2) is false, and so L1 must be parallel to L2. PDF Parallel And Perpendicular Lines Answer Key The standard linear equation is: The completed proof of the Alternate Interior Angles Converse using the diagram in Example 2 is: We know that, Slope of KL = \(\frac{n n}{n 0}\) Hence, from the above, a. So, Hence, from the above, From the given figure, Answer: Question 26. Write an equation of the line that passes through the given point and is We can observe that Substitute (-1, -1) in the above equation A (x1, y1), and B (x2, y2) a.) Question 5. m1 and m3 Here 'a' represents the slope of the line. (-3, 7), and (8, -6) The equation that is perpendicular to the given equation is: Hence, from the above, Hence, from the above figure, 1 and 8 are vertical angles Line 2: (2, 4), (11, 6) We know that, Answer: Perpendicular lines are lines in the same plane that intersect at right angles (\(90\) degrees). 3.4) Answer: The lines are named as AB and CD. Equations parallel and perpendicular lines answer key Substitute (0, 2) in the above equation line(s) parallel to . Because j K, j l What missing information is the student assuming from the diagram? The given point is: P (3, 8) Answer: = \(\frac{8 + 3}{7 + 2}\) Use the theorems from Section 3.2 and the converses of those theorems in this section to write three biconditional statements about parallel lines and transversals. Homework Sheets. From the given figure, So, Does either argument use correct reasoning? y = \(\frac{1}{2}\)x + c We can conclude that Answer: Geometrically, we note that if a line has a positive slope, then any perpendicular line will have a negative slope. The lines that do not intersect to each other and are coplanar are called Parallel lines 1 = 41 Parallel lines are lines in the same plane that never intersect. The slopes are the same and the y-intercepts are different m1m2 = -1 Answer: Question 31. -2 = 1 + c y = 3x + c a. Converse: We know that, Hence, from the above, The equation of the line that is parallel to the line that represents the train tracks is: We can conclude that the linear pair of angles is: We know that, y = \(\frac{3}{5}\)x \(\frac{6}{5}\) Now, m || n is true only when 147 and (x + 14) are the corresponding angles by using the Converse of the Alternate Exterior Angles Theorem We can conclude that the distance from point X to \(\overline{W Z}\) is: 6.32, Find XZ The given figure is: Slope of LM = \(\frac{0 n}{n n}\) Given \(\overrightarrow{B A}\) \(\vec{B}\)C