Geometric Twins

Topics

• Congruent figures

  • Superposition and corresponding parts
  • SSS congruence
  • SAS congruence
  • ASA and AAS congruence
  • RHS congruence

• Reasoning with triangles

  • Why a non-included angle may be insufficient
  • Angles opposite equal sides
  • Equilateral triangle angles

Learning objectives

1. Choose a sufficient triangle-congruence condition and identify corresponding vertices.