Text of Proving Triangles Congruent. The Congruence Postulates SSS correspondence ASA correspondence...

Proving Triangles Congruent

The Congruence Postulates

Row Game Practice!-Each row is a team-Everyone gets a white board and marker-I will check first persons answer. If its correct, your team gets 7 points!-If first persons answer is not correct, I will check everyone elses in your row. Each correct answer is 1 point for your team.-Switch seats so everyone gets a chance to be the 1st person-Winning team gets candy!

Name That TheoremSASASASSSSSA(when possible)

Name That Theorem(when possible)ASASASAAASSA

(when possible)SASSASSASReflexive PropertyVertical AnglesVertical AnglesReflexive PropertySSAName That Theorem and the property thathelps you get there

Name That Theorem and the property thathelps you get there(when possible)Perpendicular BisectorSASAlt. Int. Angles TheoremSASAASReflexive Property

Find the values of a and b that yields congruent trianglesa = 6 b = 15

Quick Review!Given ABC is a triangle, find the measure of each angle. Then classify the triangle by its angles and sides.mA = 2x + 5, mB = 3x 15 and m C = 4x + 1o

Right Isosceles

Quick Review! Find the measure of the exterior angle.

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Getting into formal proofsWe will now use one of the 6 theorems to complete some formal proofs that show whether or not 2 triangles are congruent.

What theorem completes this proof?

What theorem completes this proof?

Try one on your own! What theorem completes this proof?