Triangle Congruence Proofs

Front

What must be stated when using hypotenuse leg (HL) in a proof?

Back

There are right triangles.

Front

If DA bisects IE, what can be concluded?

Back

IA = EA.

Front

Why are

Back

They are vertical angles and vertical angles are always congruent to each other.

Front

What is always the first statement in the reason column of a proof?

Back

Given.

Front

How can you determine if two triangles are congruent?

Back

By using congruence criteria such as SSS, SAS, ASA, AAS, or HL.

Front

What does CPCTC stand for?

Back

Corresponding Parts of Congruent Triangles are Congruent.

Front

What is the definition of vertical angles?

Back

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

Front

What is the reflexive property in geometry?

Back

The reflexive property states that a quantity is equal to itself (e.g., AB = AB).

Front

What does it mean for two angles to be complementary?

Back

Two angles are complementary if their measures add up to 90 degrees.

Front

What is the definition of congruent triangles?

Back

Congruent triangles are triangles that are identical in shape and size, meaning all corresponding sides and angles are equal.