Intro to Similarity

Front

What is similarity in geometry?

Back

Similarity in geometry refers to the relationship between two shapes that have the same shape but may differ in size. Their corresponding angles are equal, and their corresponding sides are in proportion.

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

Front

What are corresponding angles?

Back

Corresponding angles are angles that are in the same position in different shapes. If two shapes are similar, their corresponding angles are equal.

Tags

CCSS.8.G.A.5

Front

What are corresponding sides?

Back

Corresponding sides are sides that are in the same position in different shapes. In similar shapes, the lengths of corresponding sides are proportional.

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

Front

What is a scale factor?

Back

A scale factor is a number that scales, or multiplies, some quantity. In similar figures, it is the ratio of the lengths of corresponding sides.

Tags

CCSS.7.G.A.1

Front

Back

Tags

CCSS.HSG.SRT.A.2

Front

What is the relationship between the angles of similar triangles?

Back

Tags

CCSS.HSG.SRT.A.2

Front

How do you find the scale factor between two similar triangles?

Back

To find the scale factor, divide the length of a side of one triangle by the length of the corresponding side of the other triangle.

Tags

CCSS.7.G.A.1

Front

Back

Tags

CCSS.7.G.A.1

Front

What is the significance of the AA criterion for similarity?

Back

The AA (Angle-Angle) criterion states that if two angles of one triangle are equal to two angles of another triangle, then the triangles are similar.

Tags

CCSS.HSG.SRT.A.2

Front

Back

Tags

CCSS.HSG.SRT.A.2