Intro to proofs

What is the reason?

• Definition of vertical angles
• Angle addition postulate
• Definition of angle bisectors
• Vertical angles are congruent

Tags

CCSS.7.G.B.5

What is the reason?

• Definition of adjacent angles
• Definition of angle congruence
• Definition of angle bisectors
• Definition of a midpoint

Tags

CCSS.HSG.CO.C.9

What is the reason?

• Definition of complementary angles
• Definition of 180⁰
• Definition of supplementary angles
• Angle Addition Postulate

Tags

CCSS.7.G.B.5

What is the reason?

• Definition of a midpoint
• Definition of segment congruence
• Segment addition postulate
• Definition of segment bisectors

Tags

CCSS.HSG.CO.C.10

Find the value of x.

• 52
• 63
• 53
• 58

Tags

CCSS.7.G.B.5

Name the angle relationship.

• Complementary
• Supplementary
• Vertical
• Adjacent

Tags

CCSS.7.G.B.5

Which property justifies the next step?

• Definition of congruence
• Transitive thm of angle congruence
• Symmetric thm of angle congruence
• Substitution property of equality

Tags

CCSS.HSG.SRT.B.5

Step 2 is what

• Substitution property (simplify)
• Multiplication property of equality
• Division property of equality
• Distributive Property

Tags

CCSS.HSA.REI.A.1

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

• Prove
• Given
• Reason
• Statement

Tags

CCSS.8.G.A.5

Identify the property used here:
39=39

• Reflexive
• Symmetric
• Transitive
• Substitution

Tags

CCSS.3.OA.B.5