Proof Reasons

Front

If B is the midpoint of AC, then AB ≅ BC.

Back

Definition of Midpoint

Tags

CCSS.HSG.GPE.B.6

Front

If k = 3, then 3 = k. Options: Substitution Property of Equality, Reflexive Property of Equality, Symmetric Property of Equality, Transitive Property of Equality

Back

Symmetric Property of Equality

Front

Which postulate or definition states that
m∠ADB + m∠BDC = m∠ADC?

Back

Angle Addition Postulate

Tags

CCSS.8.G.A.5

Front

∠4 = ∠4

Back

Reflexive Property of Equality

Front

If ∠A and ∠B are complementary, then m∠A + m∠B = 90°.

Back

Definition of Complementary Angles

Tags

CCSS.7.G.B.5

Front

If ∠1 and ∠2 are supplementary, then m∠1 + m∠2 = 180°.

Back

Definition of Supplementary Angles

Tags

CCSS.7.G.B.5

Front

If ∠1 = ∠2 and ∠2 = ∠3, then ∠1 = ∠3.

Back

Transitive Property of Equality

Front

If ∠BAT and ∠MAN are vertical angles, then ∠BAT ≅ ∠MAN.

Back

Vertical Angles Theorem

Tags

CCSS.7.G.B.5

Front

If DB bisects ∠ABC, then ∠ABD = ∠CBD.

Back

Definition of Angle Bisector

Tags

CCSS.HSG.CO.C.9

Front

If ∠DOG = ∠DOG, then m∠DOG ≅ m∠DOG.

Back

Definition of Congruent Angles

Tags

CCSS.8.G.A.2