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- GCE N(A)-Level Maths
- Congruent Triangles
Triangles congruent by SSS proofs
- Intro Lesson: a5:27
- Lesson: 13:05
- Lesson: 2a4:49
- Lesson: 2b4:20
- Lesson: 2c3:39
Triangles congruent by SSS proofs
Lessons
- Introductiona)
- Similar tirangles VS. Congruent triangles
- Ways to prove congruency:
- SSS
- SAS
- ASA
- AAS
- 1.Explain why △ABD ≅ △CDB.
- 2.Decide and explain if △LMP ≅△XYZ using the following coordinates.a)L(1, 1), M(3, 4), P(5, 1), X(-5, -4), Y(-3, -1), Z(-1, -4)b)L(2, -2), M(6, -1), P(2, 6), X(-2, -2), Y(2, -1), Z(0, -5)c)L(1, -1), M(-1, 4), P(5, 4), X(2, 6), Y(5, 12), Z(5,6)