Geometric Proofs Review

What is always the 1st statement in reason column of a proof?

• Prove
• Given
• Reason
• Statement

What is the justification?

• Definition of congruence

• Reflexive Property of Congruence

• Segment Addition Postulate

• Definition of Midpoint

Tags

CCSS.8.G.A.2

What is the justification?

• Segment Addition Postulate

• Definition of Midpoint

• Addition Property of Equality

• Complement Theorem

What is the justification?

• Definition of Supplementary Angles

• Vertical Angles Theorem

• Definition of an Angle Bisector

• Angle Addition Postulate

Tags

CCSS.7.G.B.5

What is the justification?

• Congruent Supplements Theorem

• Vertical Angles Theorem

• Definition of Supplementary Angles

• Definition of Complementary Angles

Tags

CCSS.7.G.B.5

What is the missing statement in the proof?

• 2m∠ABD=m∠ABD+m∠ABD
• m∠ABD=m∠DBC
• m∠ABC=m∠ABC
• m∠ABD+m∠ABD=m∠ABD+m∠DBC

Tags

CCSS.HSG.CO.C.9

Which is the correct reason for statement 2 in the proof?

• Given
• Transitive Property
• Definition of Congruent Angles
• Vertical Angles are congruent.

Tags

CCSS.7.G.B.5

Which symbol means "perpendicular"?

• ∏
• ∥
• ∠
• ⊥

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

What is the justification?

• Definition of Congruence

• Definition of Perpendicular

• Definition of Complementary Angles

• Definition of a Right Angle

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

What is the justification?

• Definition of an Angle Bisector

• Complementary Angles Theorem

• Definition of a Right Angle

• Angle Addition Postulate

Tags

CCSS.HSG.CO.C.9