High School · Congruence

CCSS.MATH.CONTENT.HSG.CO.C.10

Prove theorems about triangles.

Read this standard on the official Common Core site

Lessons that teach this standard

• Triangle Theorems: Angle Sum, Isosceles, Midsegment and Medians

  Complete proofs that a triangle's angles sum to 180°, that isosceles base angles are equal, that a midsegment is half the third side, and that the three medians meet.