Geometry Unit 5 and 6: Triangle Relationships

Front

What does AA similarity mean in triangles?

Back

AA similarity (Angle-Angle) means that if two angles of one triangle are equal to two angles of another triangle, the triangles are similar.

Front

What does SSS similarity mean in triangles?

Back

SSS similarity (Side-Side-Side) means that if the three sides of one triangle are proportional to the three sides of another triangle, the triangles are similar.

Front

What does SAS similarity mean in triangles?

Back

SAS similarity (Side-Angle-Side) means that if two sides of one triangle are proportional to two sides of another triangle and the included angle is equal, the triangles are similar.

Front

How do you determine if two triangles are not similar?

Back

Two triangles are not similar if none of the AA, SSS, or SAS conditions are met.

Front

If m∠CAP = 34°, what is m∠CAB if the triangles are similar?

Back

m∠CAB = 68°.

Front

What is the sum of the angles in a triangle?

Back

The sum of the angles in a triangle is always 180°.

Front

If two angles of a triangle are known, how can you find the third angle?

Back

Subtract the sum of the known angles from 180°.

Front

What is the relationship between corresponding angles in similar triangles?

Back

Corresponding angles in similar triangles are equal.

Front

What is the relationship between corresponding sides in similar triangles?

Back

Corresponding sides in similar triangles are proportional.

Front

If triangle ABC is similar to triangle DEF, what can be said about their corresponding sides?

Back

The ratios of the lengths of corresponding sides are equal.