6.4 Similar Triangles

Front

In similar polygons, corresponding sides are ___ and corresponding angles are ___.

Back

proportional, congruent

Front

Are the triangles similar?

Back

Yes

Front

Determine whether the triangles are similar by AA~, SSS~, SAS~, or not similar.

Back

Not Similar

Front

How long is side x if the corresponding side is 6 and the ratio of similarity is 4:3?

Back

8

Front

State if the triangles in each pair are similar. If so, state how you know they are similar.

Back

Yes, AA Similarity

Front

What is the AA criterion for triangle similarity?

Back

If two angles of one triangle are equal to two angles of another triangle, the triangles are similar.

Front

What does SSS stand for in triangle similarity?

Back

Side-Side-Side; if the corresponding sides of two triangles are in proportion, the triangles are similar.

Front

What does SAS stand for in triangle similarity?

Back

Side-Angle-Side; if two sides of one triangle are proportional to two sides of another triangle and the included angles are equal, the triangles are similar.

Front

If two triangles have sides in the ratio 2:3, are they similar?

Back

Not necessarily; we need to check angles or use similarity criteria.

Front

What is the relationship between the angles of similar triangles?

Back

The corresponding angles of similar triangles are equal.