Quadrilateral Diagonal Properties

Special quadrilaterals are characterized by their diagonals: a parallelogram's diagonals bisect each other, a square's are equal and perpendicular bisectors. Learners use these defining properties to find lengths and angles. It sharpens classification of quadrilaterals by structural property rather than appearance.

grade 4 GMD Draw a DiagramVisualize Spatial Relationships

Builds on: Angle Facts in a Figure

Progression (2)

4-2 1. Diagonals of a parallelogram bisect each other 4.G.A.2 · foundational

4-2 2. Square diagonals are equal and perpendicular bisectors 4.G.A.24.MD.A.3 · advanced