Geometry Unit 2 Geometric proofs

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Vertical Angle Theorem

if two angles are vertical angles they are congruent

Linear Pair Postulate

If 2 angles are a linear pair they are supplementary

Angle Addition Postulate

The sum of 2 adjacent angles = the measure of the whole angle

Subtraction Property of Equality

if a+b=b+c then a=c

Transitive Property of Equality (Substitution)

If a+b=b+c then a=c

Def of Angle Bisector

A line segment or ray that splits an angle into 2 congruent angles

Def of Congruence

Angles or segments that have equal measures

Def of Complementary angles

2 angles that add up to 90 degrees

Def of Supplementary Angles

2 angles that add up to 180 degrees