Intro to Proof

Given segment BC with point x on the segment between points B and C.  What is the best choice for the missing reason?

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

Tags

CCSS.HSA.REI.A.1

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?

• Reflexive property of equality
• Symmetric property of equality
• Angle addition postulate
• Definition of angle congruence

Tags

CCSS.7.G.B.5

What is the reason?

• Reflexive property of equality
• Definition of a right angle
• All right angles are congruent
• Definition of perpendicular

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

What is the justification?

• Symmetric theorem of angle congruence
• Angle addition postulate
• Reflexive theorem of angle congruence
• Transitive theorem of angle congruence

Tags

CCSS.HSG.SRT.B.5

Name the angle relationship.

• Complementary
• Supplementary
• Vertical
• Adjacent

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
• definition of segment bisect
• definition of a midpoint
• substitution property

Tags

CCSS.HSG.CO.C.10

Given: B is the midpoint of AC. What should you conclude?

• AB + BC = AC

• AB = BC

• A is the segment bisector of BC

• ABC is a straight angle

Tags

CCSS.HSG.CO.C.10

If an angle is a straight angle, then its measure is $180\degree$ 

 Given:  <ABC is a straight angle.
What conclusion can you draw?

• <ABC is not an acute angle

• <ABC is supplementary to another angle

• m<ABC = $180\degree$  

• <ABC is a straight angle

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1