Similarity Circles
Authored by Anthony Clark
Mathematics
10th Grade
CCSS covered
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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 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
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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