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Similarity Circles

Authored by Anthony Clark

Mathematics

10th Grade

CCSS covered

Similarity Circles
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15 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

What is the dilation scale factor for mapping circle B onto circle A?

9/16

4/3

3/4

1

Tags

CCSS.HSG.CO.A.2

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Circles X and Y have a similarity ratio of 1/2. Which of the following could NOT be true about the circles?

Circle X has a radius of 5 while Circle Y has a radius of 10.

Circle X has a circumference of 15π and Circle Y has a circumference of 30π.

Circle X has a radius of 6 while Circle Y has a radius of 12.

Circle X has a circumference of 60π while Circle Y has a circumference of 20π.

Tags

CCSS.7.G.A.1

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If the scale factor between two arcs is 5/6, then the ratio of areas is...

5:6

10:12

25:36

125:216

Tags

CCSS.7.G.A.1

4.

MULTIPLE SELECT QUESTION

1 min • 1 pt

If the ratio of areas is 9:121, then the scale factor of the arc lengths could be...

(select all that apply)

3/11

9/121

11/3

121/9

Tags

CCSS.7.G.A.1

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The radius of one circle is 9mm and the radius of a second circle is 21mm. What is the ratio of their areas in simplest form?

9:21

1:3

3:7

9:49

Tags

CCSS.7.G.B.4

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

9

3

1/3

Tags

CCSS.7.G.A.1

7.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

How many degrees are in a cirlce?

90

180

270

360

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

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