Triangle Congruence 4.2 /4.3 Day 1 SSS, SAS, ASA, AAS.

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Presentation transcript:

Triangle Congruence 4.2 /4.3 Day 1 SSS, SAS, ASA, AAS

Objectives Know the 4 triangle congruence thms

Discovering Congruent Triangles Activity Yesterday we learned what it means to be a congruent figure. Today, you will discover theorems to prove triangles congruent. Working independently or with a partner, go to the link and work through the six parts to discover the theorems Everyone must complete their own packet! You will have 25 min to complete the packet (that allows ≈4 min for each part)

Triangle Congruence Activity Chat What were the four theorems that prove triangles congruence? What two DID NOT work? Why? Why are SSS, SAS, ASA, and AAS helpful to know?

Let’s Look Again… Back to the warm up… Can we say these triangles are congruent? Why?

∠ M LN and LM ∠ L LN and NM ∠ N LN

sides

Angle-Angle-Side (AAS)

ASA Not enough info Not enough info

SSS SAS SSS ASA

Objectives Know the 4 triangle congruence thms

Exit Slip…. On the back of your warm up Pick one of the pictures below and prove that the triangles are congruent. What theorem are you using? (SSS, SAS, ASA, AAS) What are the congruent corresponding angles/sides you are using? Why are they congruent?

Kuta Software SSS, SAS, ASA, AAS Congruence WS #1-10 Homework 4.2/4.3 Practice #1-10 Kuta Software SSS, SAS, ASA, AAS Congruence WS #1-10 If you finish in class, check HW off with Ms. Bohler