Proving Parallelograms

Drag the vertices to explore the properties.

Theorems Checker

  • Parallel Sides

    Both pairs of opposite sides are parallel

    mAB: 0, mCD: 0 mBC: 0, mDA: 0

  • Congruent Sides

    Both pairs of opposite sides are congruent

    AB: 0, CD: 0 BC: 0, DA: 0

  • Congruent Angles

    Both pairs of opposite angles are congruent

    ∠A: 0°, ∠C: 0° ∠B: 0°, ∠D: 0°

  • Diagonals Bisect

    Diagonals bi-sect each other

    Midpoints match? No

  • One Pair

    One pair of opposite sides is both parallel and congruent

It's a Parallelogram!