Similarity and Dilations - Conceptual Review ONLY

How can you prove that two shapes are similar?

• If they look like the same shape, different size

• If they look like the same shape, same size

• If you can map on onto another using a dilation

• If you can map on onto another using ONLY a basic rigid motion

Tags

CCSS.HSG.SRT.A.2

CCSS.8.G.A.4

A dilation is a type of transformation where

• the size and the shape of the shape doesn't change

• where the size of the shape enlarges or reduces

Tags

CCSS.8.G.A.3

Which type of dilation will we have if the scale factor is greater than 1?

• enlargement

• reduction

• stays the same

Tags

CCSS.8.G.A.3

Which type of dilation will we have if the scale factor is between 0 and 1 (For example: r = 1/2)

• enlargement

• reduction

• stays the same

Tags

CCSS.8.G.A.3

What do we know about the corresponding angles of similar triangles?

• They are congruent

• They are proportional

Tags

CCSS.HSG.SRT.A.2

What do we know about the corresponding sides of similar triangles?

• They are congruent

• They are proportional

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6