Similar Figures

Front

What are similar figures?

Back

Figures that have the same shape but not necessarily the same size.

Front

What is the ratio of corresponding sides in similar figures?

Back

The ratio of corresponding sides in similar figures is constant.

Front

What does it mean for two figures to be proportional?

Back

It means that the ratios of their corresponding sides are equal.

Front

What are corresponding sides?

Back

Sides in two or more figures that are in the same relative position.

Front

What are corresponding angles?

Back

Angles in two or more figures that are in the same relative position.

Front

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

Back

All corresponding angles are equal.

Front

If the sides of two similar triangles are in the ratio 2:3, what is the ratio of their areas?

Back

The ratio of their areas is 4:9.

Front

How do you find the missing side length in similar figures?

Back

Use the proportion of the corresponding sides.

Front

What is a scale factor?

Back

The ratio of the lengths of two corresponding sides of similar figures.

Front

If triangle A is similar to triangle B and the length of a side in triangle A is 4 cm, what is the length of the corresponding side in triangle B if the scale factor is 2?

Back

8 cm.