Geometry › Parallelogram angles

Teacher info
Opposite angles are congruent in parallelograms
CCSS.MATH.CONTENT.HSG.CO.C.11
Prove theorems about parallelograms. Theorems include: opposite sides are congruent, opposite angles are congruent, the diagonals of a parallelogram bisect each other, and conversely, rectangles are parallelograms with congruent diagonals.

LTI launch URL (help)
https://schoolyourself.org/page/lti/sy/geometry/parallelogram-angles
Browse lessons