Similar Triangles

Front

What are similar triangles?

Back

Triangles that have the same shape but not necessarily the same size. Their corresponding angles are equal, and their corresponding sides are proportional.

Front

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

Back

The corresponding angles of similar triangles are equal.

Front

If the sides of two similar triangles are in the ratio 2:3, what can be said about their areas?

Back

The areas of the triangles are in the ratio of the squares of the sides, which is 4:9.

Front

Back

Front

Two objects that are the same shape but not the same size are _______.

Back

Similar.

Front

True or False: Sides in similar figures must be proportional.

Back

True.

Front

Find the missing side in similar triangles if the sides are in the ratio 3:5 and one side is 9. What is the corresponding side?

Back

15.

Front

Back

h = 50.

Front

What is the scale factor in similar triangles?

Back

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

Front

If triangle ABC is similar to triangle DEF, and the length of side AB is 6 and side DE is 9, what is the scale factor?

Back