6th Grade · Geometry
Polygon
6.G.A.3
Definition
A closed two-dimensional figure formed by three or more straight line segments.
Teach it
Where it is taught, with guided notes, practice, homework, an exit ticket and an interactive Teacher Deck.
Examples
- Triangles, pentagons, and hexagons are all polygons.
- A circle is NOT a polygon — it has no straight sides.
Key rule
A polygon must be closed, with only straight sides — no curves or gaps.
Memory hook
Closed shape, straight sides only.