Classwork 5.2

Front

What does SSS stand for in triangle similarity?

Back

SSS stands for Side-Side-Side, which means that if the corresponding sides of two triangles are in proportion, the triangles are similar.

Front

What does SAS stand for in triangle similarity?

Back

SAS stands for Side-Angle-Side, which means that 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

What does AA stand for in triangle similarity?

Back

AA stands for Angle-Angle, which means that if two angles of one triangle are equal to two angles of another triangle, the triangles are similar.

Front

What is the criterion for triangle similarity using SSS?

Back

If the lengths of the corresponding sides of two triangles are in the same ratio, then the triangles are similar by SSS.

Front

What is the criterion for triangle similarity using SAS?

Back

If two sides of one triangle are proportional to two sides of another triangle and the angles between those sides are equal, then the triangles are similar by SAS.

Front

What is the criterion for triangle similarity using AA?

Back

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

Front

What are corresponding angles?

Back

Corresponding angles are angles that are in the same position in different triangles when the triangles are positioned similarly.

Front

What are alternate interior angles?

Back

Alternate interior angles are pairs of angles that are on opposite sides of a transversal and inside the two lines it intersects.

Front

What are vertical angles?

Back

Vertical angles are the angles opposite each other when two lines cross. They are always equal.

Front

How can you determine if two triangles are not similar?

Back

If none of the criteria for similarity (SSS, SAS, AA) are met, then the triangles are not similar.