Basic Proofs with segments and angles

If LN = 32, what is MN?

• 11
• 20
• 12
• 10

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.CED.A.2

CCSS.HSA.REI.B.3

CCSS.HSA.SSE.A.1

• 2x-6=7x+4
• 2x-6+7x+4=90
• 2x-6+7x+4=180
• 2x-6+7x+4=360

Tags

CCSS.7.G.B.5

What is the justification (reason)?

• Reflexive Property
• Symmetric Property
• Transitive Property
• Substitution

Tags

CCSS.HSG.SRT.B.5

What is the justification (reason)?

• reflexive property

• segment addition postulate

• definition of a midpoint

• substitution property

Tags

CCSS.HSG.CO.C.10

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

• Definition of Supplementary Angles
• Angle Addition Postulate
• Definition of Right Angle
• Definition of Complementary Angles

Tags

CCSS.7.G.B.5

If <M = <L then <L = <M

• Transitive Property of Equality
• Substitution Property of Equality
• Symmetric Property of Equality
• Reflexive Property of Equality

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

• Prove
• Given
• Reason
• Statement

If X is between R & T on a line,

then RX + XT = RT

• Addition Property of Equality

• Midpoint Post.

• Angle Addition Post.

• Segment Addition Post.

If A = B, then 8A = 8B

• Multiplication Property of Equality

• Division Property of Equality

• Reflexive Property of Equality

• Addition Property of Equality

Name the property of equality or congruence that justifies going from the first statement to the second statement.

• Associative Property
• Commutative Property
• Distributive Property
• Combine Like Terms

Tags

CCSS.HSA.REI.A.1