6th Grade · Geometry
Quadrilateral
6.G.A.3
Definition
A polygon with four sides and four vertices.
Teach it
Where it is taught, with guided notes, practice, homework, an exit ticket and an interactive Teacher Deck.
Examples
- Squares, rectangles, and trapezoids are all quadrilaterals.
- 'Quad' means four — four sides.
Key rule
Any closed figure with exactly four straight sides is a quadrilateral.
Memory hook
Four sides, closed shape.