Geometry Proofs (Unit 4 Review)

Front

What does the symbol between Line AB and Line CD represent?

Back

Parallel Lines

Front

Which sides are congruent in triangle ABC?

Back

AB and AC

Front

What is the reason for the proof involving alternate interior angles formed by parallel lines?

Back

Alternate interior angles formed by parallel lines are congruent.

Front

What reasons are needed when a line segment is less than the side of a triangle in a proof?

Back

Reflexive Property & Addition Postulate

Front

If HL || IK, what type of angles are angle LHI and angle KIJ?

Back

Corresponding angles (congruent)

Front

Define congruent angles.

Back

Angles that have the same measure.

Front

What is the Reflexive Property?

Back

A quantity is equal to itself (e.g., segment AB = segment AB).

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines intersect; they are congruent.

Front

What is the definition of supplementary angles?

Back

Two angles that add up to 180 degrees.

Front

What is the definition of complementary angles?

Back

Two angles that add up to 90 degrees.