Angle & Segment Proofs

Front

What is the definition of congruence in geometry?

Back

Two figures are congruent if they have the same shape and size, meaning they can be superimposed on each other.

Front

What is the Transitive Property of congruence?

Back

If figure A is congruent to figure B, and figure B is congruent to figure C, then figure A is congruent to figure C.

Front

What does it mean for a point to be a midpoint?

Back

A midpoint is a point that divides a segment into two equal parts.

Front

What are supplementary angles?

Back

Two angles are supplementary if the sum of their measures is 180 degrees.

Front

What is the definition of a bisector in geometry?

Back

A bisector is a line, ray, or segment that divides an angle or segment into two equal parts.

Front

What is the difference between a segment and a ray?

Back

A segment has two endpoints and a finite length, while a ray has one endpoint and extends infinitely in one direction.

Front

What is the Angle Addition Postulate?

Back

If point B is in the interior of angle AOC, then the measure of angle AOB plus the measure of angle BOC equals the measure of angle AOC.

Front

What is the definition of vertical angles?

Back

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

Front

What is the definition of complementary angles?

Back

Two angles are complementary if the sum of their measures is 90 degrees.

Front

What is the definition of a transversal?

Back

A transversal is a line that intersects two or more lines at different points.