Name _______________________________________ Date ___________________ Class __________________ Parallel and Perpendicular Lines Chapter Test Circle the best answer. Use the figure for Exercises 6 and 7. 1. Classify HG and AD. A skew segments B parallel segments C perpendicular segments D intersecting segments 2. If lines and m are skew, how many planes contain two points of both lines? F 0 H 2 G 1 J 3 3. Which are NOT alternate interior angles? 6. Given r || s p, which angle is NOT congruent to 4? F 2 H 5 G 3 J 6 7. Given r s p, what is the measure of 1? A 40° C 110° B 90° D 140° 8. Which CANNOT be used to prove that lines m and n are parallel? A 3 and 6 C 2 and 3 F 2 4 B 2 and 7 D 4 and 5 G 4 is supplementary to 7. 4. The angles formed by two lines and a transversal are labeled 1 through 8. If 1 and 8 are alternate interior angles and 1 and 5 are vertical angles, what type of angle pair is 5 and 8? F alternate exterior angles G corresponding angles H 4 is supplementary to 5. J 1 5 9. Lines r and s are cut by a transversal so that 1 and 2 are same-side interior angles. If m1 (8x 40)° and m2 (12x 20)°, for what value of x is it true that r s? H alternate interior angles A 6 C 30 J same-side interior angles B 10 D 60 5. Which correctly completes the sentence? When two lines are parallel, the acute angles they form with a transversal are ________ to the obtuse angles. A supplementary B complementary C congruent D vertical Original content Copyright © by Holt McDougal. Additions and changes to the original content are the responsibility of the instructor. Holt McDougal Geometry Name _______________________________________ Date ___________________ Class __________________ Parallel and Perpendicular Lines Chapter Test continued 10. If a transversal is perpendicular to one of two parallel lines, which statement is NOT correct? 13. Which is the justification for Step 5? A 2 lines to same line 2 lines F All the angles formed are congruent. B 2 intersecting lines form linear pair of /s lines G Every pair of angles is supplementary. C Transv. Thm. H The transversal is to the other line. J Every pair of angles is complementary. 11. Which is a possible value of x? A 21 C 25 B 23 D 26 Use the figure and the partially completed proof for Exercises 12 and 13. Given: AC is the shortest segment from A to CD and m1 m2. Prove: AB AC Proof: Statements Reasons 1. m1 m2 1. Given 2. ___?___ 2. Given 3. AC CD 3. Distance from a point to a line 4. 4. Conv. of Alternate Int. /s Thm. ? 5. AB AC 5. ? 12. Which is the statement for Step 2? F AB || CD H AC CD G BD CD J Not here D Same-Side Interior Angles Theorem 14. Given the point J(2, 4), for which point K is JK a line with undefined slope? F K(2, 4) H K(4, 2) G K(2, 4) J K(2, 4) 15. If EF GH for the points E(2, 5), F(x, y), G(2, 2), and H(0, 0), which is a possible ordered pair for F? A (2, 1) C (3, 1) B (1, 4) D (3, 10) 16. Given points A(1, 4), B(0, 4), C(2, 0), and D(2, 5), what type of lines are AB and CD ? F parallel H horizontal G perpendicular J vertical 17. Which is an equation of a horizontal line? A x3 C yx B y 4 D y x 18. Which is the equation of a line that does NOT go through the origin? F x0 H yx G yx1 J y 2x 19. Which line is NOT parallel to y A 2x 3y 6 2 x 2? 3 C 6y 12 4x 1 1 D 4x 6y 12 y x 1 2 3 20. Which of the following is the equation of the line that passes through (2, 1) and is perpendicular to 5x y 9? B F x 5y 3 G y 5x H x 5y 3 3 5 J y 5x 3 5 Original content Copyright © by Holt McDougal. Additions and changes to the original content are the responsibility of the instructor. Holt McDougal Geometry Name _______________________________________ Date ___________________ Class __________________ Parallel and Perpendicular Lines Chapter Test continued 1. Identify a pair of skew segments. 7. Find the measure of QRS and state the postulate or theorem that justifies your answer. ________________________________________ 2. Write True or False. Perpendicular lines cannot be skew lines. ________________________________________ 3. How many total pairs of both alternate exterior and alternate interior angles are formed by a transversal that intersects two coplanar lines at two different points? ________________________________________ ________________________________________ 8. If 1 6 and m1 90°, is r s? ________________________________________ 4. Given: 8 and 6 are corresponding angles. Identify the transversal. ________________________________________ 9. Which values for x and y make lines r, s, and t parallel? ________________________________________ 5. If parallel lines are intersected by a transversal that is not perpendicular to them, how many pairs of nonadjacent supplementary angles are formed? ________________________________________ 6. What one word completes the following sentence? ________ angles formed by a transversal of parallel lines are congruent and all the ________ angles are supplementary to all the obtuse angles. ________________________________________ 10. If two parallel lines and a transversal form angles that are all congruent, describe the relationship between the transversal and each of the parallel lines. ________________________________________ ________________________________________ ________________________________________ Original content Copyright © by Holt McDougal. Additions and changes to the original content are the responsibility of the instructor. Holt McDougal Geometry Name _______________________________________ Date ___________________ Class __________________ Parallel and Perpendicular Lines Chapter Test continued 11. Write and solve an inequality for x. 15. If line r through (4, 4) and (6, 2) is perpendicular to line s through (x, 1) and (4, y), what are possible values for x and y? ________________________________________ ________________________________________ Use the partially completed two-column proof for Exercises 12 and 13. 16. If line r through (1, 1) and (5, 7) is parallel to line s through (4, 2) and (x, y), what are possible values for x and y? ________________________________________ Given: AD BE and BCF FCD. 17. Write True or False. All horizontal lines are perpendicular to all vertical lines, so the product of the slope of a horizontal line and the slope of a vertical line is 1. ________________________________________ Prove: BE || CF Proof: Statements Reasons 1. AD BE 1. Given 2. BCF FCD 2. Given 3. CF AD 3. ? 4. BE || CF 4. ? 12. State the justification for Step 3. ________________________________________ ________________________________________ 18. Write True or False. Multiplying both sides of the equation for a line by the same nonzero number will produce an equation for a line that coincides with the original line. ________________________________________ 19. Write the equation of the line that has y-intercept 4 and is parallel to y 2. ________________________________________ 20. Write an equation in slope-intercept form for the line that passes through (6, 6) and is perpendicular to 2x 3y 6. ________________________________________ 13. State the justification for Step 4. ________________________________________ ________________________________________ 14. If the slope of a line is 0, which type of line is it and what is true about the y-coordinates of all points on the line? ________________________________________ Original content Copyright © by Holt McDougal. Additions and changes to the original content are the responsibility of the instructor. Holt McDougal Geometry Name _______________________________________ Date ___________________ Class __________________ Answer Key Parallel and Perpendicular Lines 20. y 3 x 15 2 Chapter Test Multiple Choice 1. A 11. A 2. F 12. J 3. C 13. C 4. G 14. J 5. A 15. D 6. G 16. G 7. C 17. B 8. H 18. G 9. A 19. D 10. J 20. H Chapter Test Free Response 1. Sample answer: AB and EH 2. True 3. four 4. line s 5. eight 6. acute 7. 72; Same-Side Interior Angles Theorem 8. no 9. x 26.25 and y 3.75 10. The transversal is perpendicular to both parallel lines. 11. 4x 3 2x 11; x 7 12. 2 intersecting lines form linear pair of s lines 13. 2 lines to same line 2 lines 14. horizontal line; all the same 15. Sample answer: x 3, y 0 16. Sample answer: x 6, y 1 17. False 18. True 19. y 4 Original content Copyright © by Holt McDougal. Additions and changes to the original content are the responsibility of the instructor. Holt McDougal Geometry