Unit 2 Review. Determine the scale factor of the dilation below.
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1 Unit 2 Review 1. oes the graph below represent a dilation? Why or why not? y (0, 7) (0, 3.5) 2 1 (5, 7) (5, 3.5) F -2 (5, 0) x a. Yes, because the preimage sides are parallel with the corresponding image sides. b. No, because the preimage sides are not parallel with the corresponding image sides. c. Yes, because there is a single scale factor and a center of dilation. d. No, because the scale factors of the image sides are not all consistent with the preimage sides. 2. etermine the scale factor of the dilation below. H 3.75 H J 13.8 J G a. k = 1.07 b. k = 2.5 G c. k = 0.4 d. k = 9.2
2 3. FGH has vertices F (3, 5), G (8, 6), and H (6, 7). If FGH is dilated through the origin with a scale factor of 3 4 a. F' ( 3, 5), G' ( 8, 6), and H' ( 6, 7), what are the vertices of F GH? b. F' (2.25, 3.75), G' (6, 4.5), and H' (4.5, 5.25) c. F 4, 20 3, G 32 3, 8, and 8, 28 H 3 d. F' ( 5, 3), G' ( 6, 8), and H' ( 7, 6) 4. triangle congruent to is to be constructed. Only three components are measured. Which three components, if constructed in the order listed, will always create a congruent triangle? a. side-side-angle b. angle-angle-angle c. angle-side-angle d. Only the three side lengths can be used to create a congruent triangle Which set of equivalent measures does not indicate that two triangles must be congruent? a. angle-angle-angle b. angle-side-angle c. side-angle-side d. angle-angle-side For and F, the following is given:,, F. y which triangle congruence statement can it be concluded that the triangles are congruent? a. SSS b. SS c. S d. It cannot be determined if the triangles are congruent. has undergone a series of similarity transformations to produce FG. Which of the following statements is NOT true? a. The angles of FG are proportional to the angles of. b. The angles of FG are the same as the angles of. c. The sides of FG are proportional to the sides of. d. is similar to FG.
3 8. What is the length of F? F a. 4 units b. 1 unit c. 9 units d. 2 units 9. re the two triangles similar? Why or why not? F a. Yes, they are similar because of the Similarity Statement. b. Yes, they are similar because of the S ongruence Statement. c. No, they are not similar because they are congruent. d. There is not enough information to determine similarity. 10. Identify the similar triangles. Find x and the missing side lengths. 6 x x a. ; x = 2.5; = 7.5; = 15 b. ; x = 2.5; = 15; = 7.5 c. ; x = 2.5; = 7.5; = 15 d. ; x = 5.2; = 10.5; = 18
4 11. The length of a building s shadow is feet. t the same time of day, a 1.8-foot-tall tree casts a shadow that is 2.4 feet long. What is the height of the building? a feet b feet c feet d feet 12.. What is the length of? x a. 25 units b. 9 units c. 4 units d. There is not enough information to determine the length of. 13. is a right triangle. Find the length of x, which is the altitude of. 50 x a. 30 units b. 7.7 units c. 2.7 units d. There is not enough information to determine the length of x. 18
5 14. Which statement would justify that? a. ngle-ngle () Similarity Statement b. Side-ngle-Side (SS) Similarity Statement c. Side-Side-Side (SSS) Similarity Statement d. It is not possible to determine if. 15. What is the length of? 20 x a. 5 units b. 10 units c. 20 units d. There is not enough information to determine the length of.
6 16.. What is the length of? 30 x 6 18 a. 90 units b. 7.5 units c units d. There is not enough information to determine the length of. 17. In the diagram below, 1 and 2 are a linear pair. Find m 1 if m 1= 2x 9 and m 2= 10x a. 17º b. 159º c. 163º d. 21º
7 18. In the diagram below, l is the transversal of the parallel lines m and n. Find m 3 if m 4= 5( x+ 11) and m 5= 11x 17. l m n a. 115º b. 65º c. 78º d. 12º In the diagram below, l is the transversal of the parallel lines m and n. Find m 8 if 19. In the diagram below, l is the transversal of the parallel lines m and n. Find m 5 if m 3= 2(3x 4) and m 5= 5(3x+ 4). l m n a. 8º b. 172º c. 40º d. 140º
8 20.. What is the measure of? a. 45 b. 63 c. 108 d What is the measure of? 40 a. 20 b. 40 c. 80 d. 100
9 22. If = 3x 1 and XY = 2x 3, what is the length of XY? X Z (3x 1) (2x 3) Y a. 5 units b. 7 units c. 14 units d. 28 units 23. etermine whether these four vertices form a parallelogram: ( 3, 0), (6, 0), (1, 1), ( 2, 2). 24. a. No, because both pairs of opposite sides are not parallel. b. Yes, because both pairs of opposite sides are parallel. c. No, because the diagonals bisect each other. d. Yes, because the diagonals bisect each other. lassify a quadrilateral as precisely as possible given four vertices: P ( 6, 3), Q ( 3, 7), R ( 7, 10), S ( 10, 6). a. square b. rhombus c. trapezoid d. kite 25. What is always true about rhombuses? a. The diagonals are not congruent. b. Two pairs of adjacent distinct sides are congruent. c. The diagonals intersect at right angles. d. very angle measures 90º.
Name: Date: Period: 1. In the diagram below,. [G.CO.6] 2. The diagram below shows a pair of congruent triangles, with and. [G.CO.
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