Circle Similarity
Authored by Joshua Willis
Mathematics
9th - 12th Grade
CCSS covered
Used 11+ times
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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
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
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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