Presentation on theme: "Dilations And Similar Figures"— Presentation transcript:
1 Dilations And Similar Figures Unit 5 Quiz ReviewDilationsAndSimilar Figures
2 1 – Dilate the figure by a scale factor of 200% Original Points A (0,4) B (-6,5) C (-8,5) D (-12, 4)New Points A’ ( ) B’ ( ) C’ ( ) D’ ( )
3 2- What is the scale factor of the reduction of from XQ2 in4 inR1.5 inSY3 inZ
4 3- If I dilate a figure by 175% the new figure will be _______ than the original figure. This is called a(n) _______________.
5 4- If I dilate a figure by 75% the new figure will be _________ than the original figure. This is called a(n) _______________.
6 5- Dilate the point (3,7) by a scale factor of ½ 5- Dilate the point (3,7) by a scale factor of ½. Write the scale factor as a decimal and a percent. Write if the dilated figure will be bigger or smaller (in proper mathematical terms)
7 6. In the diagram below, what is the ratio of the area of Triangle PQR to the area of Triangle LMN?
8 7. If the sides of two similar rectangles have a ratio of , what is the ratio of their areas?
9 8. If the ratio of two areas of two similar triangles is 1:16, what is the ratio of the sides of the similar triangles?
10 2”4”2”4”9- Given the figures are similar, if the area of pentagon A is 12 square inches, what is the area of pentagon B?
11 10- What is the scale factor of the enlargement? 36”30”24”20”10”15”
12 11-What is the length of the missing side if the ratio of the areas (B:A) is 9/16? x in
13 12- What is the height of the tree? X ft.4 ft.Boy’s shadow: 10 ft.Tree’s shadow: 50 ft.
14 13- What relationship do you see between the ratio of sides of two similar rectangles and the ratio of the areas of two similar rectangles?
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