Similar Figures

Front

What are similar figures?

Back

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

Front

What is the relationship between the corresponding angles of similar figures?

Back

The corresponding angles of similar figures are equal.

Front

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

Back

The corresponding sides of similar figures are in proportion.

Front

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

Back

The ratio of their areas is equal to the square of the ratio of their corresponding sides.

Front

What does it mean for two figures to be proportional?

Back

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

Front

How can you determine if two figures are similar?

Back

By checking if their corresponding angles are equal and their corresponding sides are in proportion.

Front

What is a scale factor in similar figures?

Back

The scale factor is the ratio of the lengths of two corresponding sides of similar figures.

Front

If triangle ABC is similar to triangle DEF, and the length of side AB is 4 cm and side DE is 8 cm, what is the scale factor?

Back

The scale factor is 2.

Front

What is the effect of a scale factor greater than 1 on the size of a figure?

Back

It enlarges the figure.

Front

What is the effect of a scale factor less than 1 on the size of a figure?

Back

It reduces the figure.