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Circle Similarity

Authored by Joshua Willis

Mathematics

9th - 12th Grade

CCSS covered

Used 11+ times

Circle Similarity
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12 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

All circles are similar.

True

False

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

9:21

1:3

3:7

9:49

Tags

CCSS.7.G.B.4

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The circumference of Circle A is 24π feet.

The circumference of Circle B is 4π feet.

What is the ratio of their radii in simplest form?

24:4

48:8

1:6

6:1

Tags

CCSS.7.G.B.4

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Circle A has a diameter of 25m. Circle B has a diameter of x.

If Circle A has and area of 78.5 square meters and

Circle B has an area of 706.5 square meters, what is the diameter of Circle B?

(hint: draw a picture)

25 meters

9 meters

225 meters

125 meters

Tags

CCSS.7.G.B.4

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What is the translation vector for Circle B to Circle A?

(x, y) →(x + 8, y - 4)

(x, y) →(x - 4, y + 8 )

(x, y) →(x - 8, y + 4)

(x, y) →(x + 4, y - 8)

Tags

CCSS.HSG.CO.A.2

6.

MULTIPLE CHOICE QUESTION

30 sec • 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

7.

MULTIPLE CHOICE QUESTION

2 mins • 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

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