Geometry Triangle Proof Ideas

What is statement #4?

• ∆HFG≅∆IHF

• ∆FHG≅∆IHF

• ∆GFH≅∆IFH

• ∆HFG≅∆IFH

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

• A

• B

• C

• D

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

• HA=HA

• HA=AH

• MA=AM

• MA=MA

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

• A

• B

• C

• D

Use the congruence statement to find the missing part of the statement

• WV

• WU

• VU

• WB

Which is NOT a test to prove triangles congruent?

• SAA

• SSS

• SSA

• SAS

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

• Proof

• Def. of Midpoint

• Reflexive Property

• Vertical angle Theorem

What is reason #4?

• ASA

• SAS

• HL

• AAS

Determine if the triangles are congruent, if "yes" state the theorem.

• yes, SAS

• not congruent

• yes, ASA

• yes, AAS

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.