Geometry Vocabulary

A ploygon with nine sides and nine angles.

• Nonagon

• Nanagon

• Optigon

• Heptagon

The measure of space that a solid figure occupies.

• Length

• Volume

• Inches

• Base

A solid figure with faces that are polygons

• 3-Dimensional Object

• Regular Polygon

• Unit Cube

• Polyhedron

A solid figure that has two congruent polygon-shaped bases, and other faces that are all rectangles.

• Pyramid

• Prism

• 3-Dimensional Object

• Unit Cube

Any polygon with four sides and four angles.

• Quadrilateral

• Square

• Rectangle

• Cube

A solid figure with a polygon base and all other faces are triangles that meet at a common vertex.

• Cube

• Prism

• Regular Polygon

• Pyramid

A triangle with no congruent sides.

• Scalene Triangle

• Regular Triangle

• Isosceles Triangle

• Equilateral Triangle

The measure of the space that a solid figure occupies.

• Mass

• Volume

• Area

• Perimeter

What is a closed plane figure made up of line segments?

•  Polygon

• Irregular Polygon

• Circle

• Shape

What has sides of equal length and angles of equal measure?

• Irregular Polygon

• Shapes

• Circles

• Regular Polygon