Khan Academy Static

Not all things with four sides have to be squares or rectangles! We will now broaden our understanding of quadrilaterals.

3773_Proof_Rhombus_area.html

3770_Proof_Diagonals_of_a_parallelogram.html

3772_Proof_Rhombus_diagonals_are_perpendicular_bisectors.html

3769_Proof_Opposite_sides_of_a_parallelogram.html

3775_Whether_a_special_quadrilateral_can_exist.html

3774_Area_of_parallelogram_proof.html

3776_Rhombus_diagonals.html

3771_Proof_Opposite_angles_of_a_parallelogram.html