Similarity Review Act 17-18

Which transformation is not a rigid transformation?

• Translation
• Reflection
• Rotation
• Dilation

Tags

CCSS.HSG.CO.A.2

What is Dilation?

• Dilation means to enlarge or reduce

• Dilation means to reflect on something

• Dilation means to like something

• Dilation means to make something different by making it smaller

When you dilate a figure you...

• slide it.
• turn it.
• flip it.
• make it larger or smaller.

Tags

CCSS.8.G.A.3

How does a dilation change the angles of a polygon?

• It changes by the scale factor.
• Dilations do not change the angles.
• It is impossible to answer this question.  The angles change unpredictably.
• The angles all change to larger angles.

Tags

CCSS.8.G.A.3

Dilate Point A by a scale factor of 1/2 about the origin.

• (-4,-4)

• (-1,-4)

• (-1,-1)

• (-2,-2)

An office supply store sells index cards in two different sizes. The large size is an enlargement of the small size. Both sizes are shown. Find the scale factor of the enlargement.

• 2
• 3
• 4
• 5

Tags

CCSS.7.G.A.1

If two figures are similar their angles are______.

• proportional
• congruent
• supplementary
• complementary

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

If two figures are similar, the corresponding sides are ______________.

• equal
• congruent
• proportional
• none of these

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

ΔSQR∼ΔSPT. Which choice below lists two corresponding sides?

• SP and SR

• QS and PT

• PS and RS

• TP and RQ

Tags

CCSS.HSG.SRT.A.2

Complete each proportion.
AB / BM  =  ? / CD

• BC
• AC
• MD
• MC