Intro to Geometry Proofs

Front

What is the Substitution Property?

Back

The Substitution Property states that if two quantities are equal, one can be substituted for the other in any expression.

Front

What is the Segment Addition Postulate?

Back

The Segment Addition Postulate states that if point X is between points R and T on a line, then RX + XT = RT.

Front

What is the definition of complementary angles?

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Front

What is the definition of perpendicular lines?

Back

Perpendicular lines are lines that intersect to form right angles (90 degrees).

Front

What is the definition of a midpoint?

Back

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

Front

What is the Angle Addition Postulate?

Back

The Angle Addition Postulate states that if point A is in the interior of angle BDC, then m∠BDA + m∠ADC = m∠BDC.

Front

What is the Reflexive Property of Congruence?

Back

The Reflexive Property of Congruence states that any geometric figure is congruent to itself.

Front

What is the Transitive Property?

Back

The Transitive Property states that if a = b and b = c, then a = c.

Front

What is the definition of a right angle?

Back

A right angle is an angle that measures exactly 90 degrees.

Front

What is the definition of a bisector?

Back

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