Triangle congruence proofs

If L is the midpoint of TJ, what must be true?

• TL=JT
• JL=TJ
• TL=LJ
• T is also the midpoint of JL

Tags

CCSS.HSG.CO.C.10

If DA bisects IE, then

• ID=ED
• IA=EA
• <IDA=<EDA
• <IAD and <EAD are right angles

Tags

CCSS.HSG.CO.C.9

If AD bisects <EDI, then

• <ADE=<IDA
• IA=AE
• ID=ED
• All of the above

Tags

CCSS.HSG.CO.C.9

In this picture,

• <BCA=<DCE because they are vertical angles and vertical angles are always congruent to each other
• <C=<C because they are vertical angles and vertical angles are always congruent to each other
• <EDC=<ACB because they are vertical angles and vertical angles are always congruent to each other
• None of the above; we don't actually have vertical angles

Tags

CCSS.7.G.B.5

State if the two triangles are congruent.  If they are, state how you know.

• A
• B
• C
• D

Tags

CCSS.HSG.SRT.B.5

What is the "statement" for step 3 of the proof?

• HA=HA

• HA=AH

• MA=AM

• MA=MA

Tags

CCSS.HSG.SRT.B.5

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

• Prove
• Given
• Reason
• Statement

When using hypotenuse leg (HL) in a proof, you must first state ...

• CPCTC.
• there are right triangles.
• that vertical angles are congruent.
• the reflexive property.

Tags

CCSS.HSG.SRT.B.5

What is statement #1?

• 
• Given

• 

Tags

CCSS.HSG.SRT.B.5

What is the reason for statement #1?

• Given

• Definition of Congruent Segments

• Prove

Tags

CCSS.HSG.SRT.B.5