Similar Figures Review

Select ALL the true statements about an image after a dilation.

• The image is a different shape than the preimage.

• The image is a different size than the preimage.

• The image has the same angle measures as the preimage.

• The image is similar to the preimage.

• The image has the same side lengths as the preimage.

What side in triangle DEF, corresponds with AB in triangle ABC? 

• BC
• FE
• DE
• FD

What is true about the shape and size of similar figures?

• Same shape and same size
• Same shape and not the same size
• Different shape and same size
• Different shape and not the same size

The term "congruent" means ...

• matching
• similar
• corresponding
• equal

What is true about the angles of similar figures?

• Corresponding angles are proportional.
• Complementary angles are proportional.
• Corresponding angles are congruent.
• Complementary angles are congruent.

• 72°

• 54°

• 36°

• 18°

Two objects that are the same shape but not the same size are _______.

• Congruent

• Vertical

• Similar

• Complementary

Two objects that are the same shape but not the same size are _______.

• Congruent
• Vertical
• Similar
• Complementary 

Dilate the figure by a scale factor of 3 with the origin as the center of dilation. What are the coordinates of the image?
A(3,3) B(6,6) C(9,3)

• A'(9,9) B'(18,18) C'(27,9)
• A'(6,6) B'(9,9) C'(12,6)
• A'(0,0) B'(3,3) C'(6,0)
• A'(1,1) B'(2,2) C'(3,1)

Tags

CCSS.7.G.A.1

State the coordinate of the image of the given point B (-10,-6) under a dilation with center at the origin with the given scale factor k = 1/2.

• (5,3)
• (20,12)
• (-20,-12)
• (-5,-3)

Tags

CCSS.7.G.A.1

CCSS.7.NS.A.2

CCSS.7.NS.A.3

CCSS.7.RP.A.2