Properties of Congruent and Similar Figures

Front

What are congruent figures?

Back

Figures that are the same size and shape.

Front

What are similar figures?

Back

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

Front

Are all angles in similar figures congruent?

Back

True.

Front

What is the scale factor in similar figures?

Back

The ratio of the lengths of corresponding sides.

Front

What are corresponding sides?

Back

Sides that are in the same position in similar or congruent figures.

Front

What are corresponding angles?

Back

Angles that are in the same position in similar or congruent figures.

Front

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

Back

All corresponding angles are congruent.

Front

If the scale factor is 1/2, what does that mean?

Back

The new figure is half the size of the original figure.

Front

What is the relationship between the areas of two similar figures with a scale factor of k?

Back

The ratio of their areas is k^2.

Front

If triangle ABC is similar to triangle DEF, what can be said about their sides?

Back

The lengths of corresponding sides are proportional.