Congruent triangles
If you can take one figure and flip, shift and rotate (not resize) it to be identical to another figure, then the two figures are congruent. This topic explores this foundational idea in geometry.

Subtopics

  1. Congruence postulates Congruence postulates
  2. Congruence and isosceles and equilateral triangles Congruence and isosceles and equilateral triangles