High School · Congruence

CCSS.MATH.CONTENT.HSG.CO.C.11

Prove theorems about parallelograms.

Read this standard on the official Common Core site

Lessons that teach this standard

• Parallelogram Proofs: Sides, Angles and Diagonals

  Proofs that a parallelogram's opposite sides and angles are congruent, that its diagonals bisect each other, and that equal diagonals make it a rectangle.