Isosceles Triangle Theorem (Proof, Converse, & Examples) Isosceles triangles have equal legs (that's what the word "isosceles" means). Yippee for them, but what do we know about their base angles? How do we know those are equal, too? We reach into our geometer's toolbox and take out the Isosceles Triangle Theorem. Triangle Congruence Worksheet For each pair to triangles, state the postulate or theorem that can be used to conclude that the triangles are congruent. 12. Page 1 10. Triangle Congruence Worksheet 11.
4.22 Mixed Triangle Proofs - Stations lp0.pdf. High Tech High School. MATH 101 - Spring 2017. 4.22 Mixed Triangle Proofs - Stations lp0.pdf. 32 pages. PTS 1 REF 4 3 Triangle Congruence by ASA and AAS TOP 4 3 Example 4 KEY ASA.