Proof Properties, Algebra and Segment Proofs

Put the statements for the following proof in order.

 

​ ​

• 7x - 8 = 9x

  Given

• -8 = 2x

  Subtraction

• -4 = x

  Division

• x = -4

  Symmetric

Tags

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.3

Put the reasons for the following proof in order.

 

​ ​ The first reason is given.

• Symmetric

• Distributive

• Subtraction

• Addition

• Division

Tags

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.3

Put the reasons for the following proof in order.

 

​ ​

• Given

• Subtraction

• Subtraction

• Division

Tags

CCSS.HSA.REI.A.1

• angle ABC

• angle CBA

• angle BAC

• a mirror

Complete the statement using the multiplication postulate.

 

If PQ = 7, then 3(PQ) =

 

​ ​ (a)  

Tags

CCSS.6.EE.A.2

CCSS.6.EE.A.3

CCSS.6.EE.B.6

What property or postulate is being illustrated?

 

If 5(AM) = 20  , then 20 = 5(AM) ​ .

 

​ (a)  

• Symmetric
• Commutative
• Multiplication
• Division
• Substitution

Tags

CCSS.6.EE.A.3

CCSS.6.EE.A.4

• Substitution
• Symmetric
• Addition
• Transitive
• Commutative

What property or postulate is being illustrated?

 

If 7n = 56  , then n = 8 ​ .

 

​ (a)  

• Division
• Addition
• Multiplication
• Subtraction
• Substitution

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.3

What is the reason?

• Definition of congrucent
• Definition of midpoint
• Definition of segment
• Segment Addition 

Tags

CCSS.HSG.CO.B.6

CCSS.HSG.CO.B.7

What is the reason?

• Transitive 
• Substitution
• Middle Man
• Replacing