similar triangles

Front

What are similar triangles?

Back

Triangles that have the same shape but may have different sizes. Their corresponding angles are equal, and their corresponding sides are proportional.

Front

What does it mean for angles in similar figures?

Back

All angles in similar figures are congruent (equal in measure).

Front

If two triangles are similar, what can we say about their sides?

Back

The sides of similar triangles are proportional.

Front

What are corresponding sides?

Back

Sides in similar figures that are in the same relative position.

Front

What is the relationship between the ratios of the sides of similar triangles?

Back

The ratios of the lengths of corresponding sides are equal.

Front

If triangle ABC is similar to triangle DEF, what can we say about angle A and angle D?

Back

Angle A is equal to angle D.

Front

If the sides of triangle ABC are 2 ft, 4 ft, and 6 ft, and triangle DEF is similar to it, what could be the lengths of its sides?

Back

Any proportional lengths, such as 1 ft, 2 ft, and 3 ft.

Front

True or False: Two triangles can be similar if one is a scaled version of the other.

Back

True.

Front

What is the scale factor in similar triangles?

Back

The ratio of the lengths of corresponding sides.

Front

If triangle GHI is similar to triangle JKL and the scale factor is 3, what is the length of a side in triangle JKL if the corresponding side in triangle GHI is 5 cm?

Back

15 cm.