1. POLYGONS & QUADRILATERALS

2. POLYGON
A polygon is a flat, closed plane figure made up of three or more line segments.
polygons
Not polygons

3. TRIANGLE
A triangle is a 3-sided polygon.

4. QUADRILATERAL
A quadrilateral is a 4-sided polygon.

5. PENTAGON
A pentagon is a 5-sided polygon.

6. HEXAGON
A hexagon is a 6-sided polygon.

7. HEPTAGON or SEPTAGON
A heptagon is a 7-sided polygon.

8. OCTAGON
An octagon is an 8-sided polygon.

9. QUADRILATERALS

10. PARALLELOGRAM
A parallelogram has opposite sides parallel and opposite sides are equal in length.
NAMES: Quadrilateral, Parallelogram

11. RECTANGLE
A rectangle has opposite sides parallel and four right angles.
NAMES: Quadrilateral, Parallelogram, Rectangle,

12. TRAPEZOID A trapezoid has only one pair of parallel sides.
NAMES: Quadrilateral, Trapezoid

13. RHOMBUS
A rhombus has opposite sides parallel and all four sides are equal in length.
NAMES: Quadrilateral, Parallelogram, Rhombus,

14. SQUARE
A square has four sides of the same length and four right angles.
NAMES: Quadrilateral, Parallelogram, Rectangle,
Rhombus,
Square