Similarity Polygons

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

To find the height of a very tall pine tree, you place a mirror on the ground and stand where you can see the top of the pine tree.  How tall is the tree?

• 144 feet
• 72 feet
• 36 feet

Tags

CCSS.HSG.SRT.B.5

Complete each proportion.
AB / BM  =  ? / CD

• BC
• AC
• MD
• MC

Tags

CCSS.HSG.SRT.A.2

CCSS.HSG.SRT.A.3

CCSS.HSG.SRT.B.5

What is the value of X?

• X=4
• X=6
• X=3
• X=2

Tags

CCSS.HSG.SRT.A.2

Solve for X.

• 2 ft
• 3 ft
• 4 ft
• 6 ft

Tags

CCSS.HSG.SRT.A.2

When you dilate a figure you...

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

Tags

CCSS.8.G.A.3

All corresponding sides are proportional (same ratio) in similar figures.

• True
• False

Tags

CCSS.8.EE.B.6

State if the triangles in each pair are similar. If so, state how you know they are similar and complete the similarity statement.

• A

• B

• C

• D

State if the triangles in each pair are similar. If so, state how you know they are similar and complete the similarity statement.

• Similar; SSS similarity; $\Delta BCA$

• Similar; AA similarity; $\Delta ABC$

• Not Similar

• Similar; SAS similarity; $\Delta ABC$

State if the triangles in each pair are similar. If so, state how you know they are similar and complete the similarity statement.

• Not similar

• Similar; AA similarity; $\Delta UTP$

• Similar; AA similarity; $\Delta PTU$

• Similar; AA similarity; $\Delta PUT$