Geometry proofs vocab.

Congruent

As also equal in measure.

Perpendicular

intersects at a right angle, creates a right angle.

Midpoint

a point that divides a line segment into two ≅ segments.

Linear Pair

pair of angles that are adjacent and supplementary.

Vertical Angles

if vertical angles, then they are congruent.

Congruent  

also equal in measure

Angle Bisector  

divides into two ≅ angle

Segment bisector

line, segment or ray that divides a segment at the midpoint

Midpoint

a point that divides a line segment into two ≅ segments

Supplementary angles

two angles that add up to 180˚

Complementary Angles

two angles that add up to 90˚

Linear Pair

pair of angles that are adjacent and supplementary

Right Angle

Angle measures exactly 90˚

Perpendicular

intersects at a right angle, creates a right angle

Vertical Angles

if vertical angles, then they are congruent

Segment Addition Postulate

If B is between AC on a line segment, then AB + BC = AC

Angle Addition Postulate

If T is in the interior of ∠ABC, then m∠ABT + m∠TBC = m∠ABC

Right Angle Congruence

all right angles are congruent

Congruent Complements Theorem

two angles complementary to the same angle or congruent angles are congruent

Congruent Supplements Theorem

two angles supplementary to the same angle or congruent angles are congruent