Dilations, Similarity, Scale Factor
Authored by Anthony Clark
Mathematics
8th Grade
CCSS covered
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11 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Quad OBCD is similar to Quad OHTE because:
Quad OBCD can be reflected over the x axis and then rotated 90 degrees
Quad OBCD can be reflected over the x-axis and then dilated about point O by a scale factor of 2.
Quad OBCD can be reflected over the y-axis and then dilated about point O by a scale factor of 2.
Quad OBCD can be reflected over the y-axis and then dilated about point O by a scale factor of 1/2.
Tags
CCSS.8.G.A.4
CCSS.HSG.SRT.A.2
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
ΔOBC is similar to ΔOGT because: (choose the best answer)
ΔOBC can be dilated about point O by a scale factor of 1/2, and then rotated 90 degrees about point O.
ΔOBC can be dilated about point G by a scale factor of 1/2, and then reflected over the x- axis
They aren't similar
They map to each other with similarity transformations.
Tags
CCSS.8.G.A.4
CCSS.HSG.SRT.A.2
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Similar figures must have
Proportional sides and equal angles
Equal sides and equal angles
Proportional sides and the same number of angles
Similar looking shapes
Tags
CCSS.8.G.A.2
CCSS.HSG.CO.B.6
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Square A is a Dilation of Square B. What is the scale factor of the squares?
1/7
4/5
5/4
7
Tags
CCSS.8.G.A.3
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The __________ is the ratio of a length of the image to the corresponding length on the original figure.
reduction
enlargement
scale factor
center of dilation
Tags
CCSS.7.G.A.1
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
What is the scale factor of this dilation?
Tags
CCSS.8.G.A.4
CCSS.HSG.SRT.A.2
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
True or false, when a figure is dilated, the corresponding angles are congruent?
True
False
Tags
CCSS.8.G.A.3
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