Download - Unit 5 Quiz Review

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Page 1: Unit 5 Quiz Review

Unit 5 Quiz ReviewDilations

And Similar Figures

Page 2: Unit 5 Quiz Review

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’ ( )

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2- What is the scale factor of the reduction of from QRSXYZ

X

Y Z

SR

Q

4 in

3 in

1.5 in

2 in

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3- If I dilate a figure by 175% the new figure will be _______ than the original figure. This is called a(n) _______________.

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4- If I dilate a figure by 75% the new figure will be _________ than the original figure. This is called a(n) _______________.

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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)

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6. In the diagram below, what is the ratio of the area of Triangle PQR to the area of Triangle LMN?

5 m.

L

M N

P

Q R

8 m.4 m.

3 m.

5 m.

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7. If the sides of two similar rectangles have a ratio of , what is the ratio of their areas?

114

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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?

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9- Given the figures are similar, if the area of pentagon A is 12 square inches, what is the area of pentagon B?

2”

2” 4”

4”

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10- What is the scale factor of the enlargement?

20”

10”

24”

15”

36”30”

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11-What is the length of the missing side if the ratio of the areas is 9/16?

6 in x in

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12- What is the height of the tree?

Tree’s shadow: 50 ft. Boy’s shadow: 10 ft.

X ft.

4 ft.

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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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