Intro to Triangle Proofs

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

• WV

• WU

• VU

• WB

What is the "statement" for step 2 of the proof?

• ∆BAC≅∆DAC

• BC=DC

• ∡B≅∡D

• ∡BAC≅∡DAC

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

A triangle with two congruent sides and two congruent angles (base angles) is called ...

• scalene

• equilateral

• isosceles

• obtuse

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

• yes, SAS

• not congruent

• yes, ASA

• yes, AAS

What is Statement?

• ∠MNL ≌ ∠ONP

• MN ≌ ON

• N ≌ N

• MO ≌ OM

What is Reason?

• Alternate Exterior Angles

• Alternate Interior Angles

• Vertical Angles

• Angle Bisector

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?

• AD=DA

• AN = AH

• HD=ND

• HD=DN