Geometric shapes

The shapes shown below may be useful reminders to you as you help with your child’s geometry homework. Each geometry shape includes a brief description and a illustrated example.

List of shapes

Shape	Description
Polygon	A closed figure made of line segments each of which intersects with exactly two other line segments.
Quadrilateral	4-sided polygon
Square	A quadrilateral having all sides equal in length and forming right angles.
Triangle	A 3-sided polygon (sum of internal angles = 180°)
Rectangle	A 4-sided polygon with all right angles.
Parallelogram	4-sided polygon with two pairs of parallel sides.
Pentagon	5-sided polygon (the graphic shows a regular hexagon with "regular" meaning each of the sides are equal in length)
Hexagon	6-sided polygon
Heptagon	7-sided polygon
Octagon	8-sided polygon