Similar Figures

Front

What are similar figures?

Back

Two figures that have the same shape but may differ in size.

Front

If two triangles are similar, what can be said about their corresponding angles?

Back

Their corresponding angles are equal.

Front

If a model of a house is built using a scale of 5 in:25 ft, what is the scale factor?

Back

The scale factor is 1:5.

Front

What is the relationship between the lengths of corresponding sides of similar figures?

Back

The lengths of corresponding sides are proportional.

Front

If a window in a model is 1.5 in. wide, how wide is the actual window if the scale is 5 in:25 ft?

Back

7.5 feet.

Front

What is the term for sides that are in the same position in similar figures?

Back

Corresponding sides.

Front

What must be true for two figures to be congruent?

Back

They must have the same shape and size.

Front

What is the difference between similar and congruent figures?

Back

Similar figures have the same shape but different sizes; congruent figures have the same shape and size.

Front

If two angles are equal in two different triangles, what can be inferred about the triangles?

Back

The triangles may be similar.

Front

What is the scale factor if a model is 1 inch to 10 feet?

Back

The scale factor is 1:120.