Geometry - 2-Column Proof Practice

Front

What does it mean to bisect a segment or an angle?

Back

To split it into 2 equal parts.

Front

When writing a proof, what should you start with?

Back

The given.

Front

Given: ∠1 and ∠2 are supplementary. What can you conclude?

Back

Front

What is the reason for #4 in a proof?

Back

Vertical Angles are congruent.

Front

What is the value of x, y, and z if x=47° and y=10 and z=5?

Back

x=47°, y=10, z=5.

Front

What is the definition of supplementary angles?

Back

Two angles that add up to 180 degrees.

Front

What is the definition of vertical angles?

Back

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

Front

What is the Reflexive Property?

Back

Front

What does it mean to prove that angles are congruent?

Back

To show that they have the same measure.

Front

What is the definition of an angle bisector?

Back

A ray that divides an angle into two equal parts.