Similar Triangles

Front

What is the similarity statement for two triangles that are similar?

Back

ΔLMN ∼ ΔPQO

Front

What must be true about the sides of similar figures?

Back

Sides in similar figures must be proportional.

Front

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

Back

Their corresponding angles are equal.

Front

What is the definition of similar triangles?

Back

Two triangles that have the same shape but not necessarily the same size.

Front

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

Back

Use the proportionality of the sides.

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 ratio of their corresponding sides?

Back

1:2

Front

What is the relationship between the areas of two similar triangles?

Back

The ratio of their areas is the square of the ratio of their corresponding side lengths.

Front

If two triangles have a similarity ratio of 3:5, what is the ratio of their perimeters?

Back

3:5

Front

What is the term for two shapes that are the same shape but not the same size?

Back

Similar.

Front

If the lengths of the sides of triangle XYZ are 6, 8, and 10, and triangle ABC is similar to triangle XYZ with a scale factor of 2, what are the lengths of the sides of triangle ABC?

Back

12, 16, and 20.