Triangle Geometry

A triangle is a 2-dimensional shape with three sides and three angles.

A triangle has some important dimensions: the length of the base and the height. It also has an area, which is the amount of space contained by a triangle.

This widget allows you to find the length of the base, height and area of a triangle.

Learn About Triangle Geometry

Draw a triangle by:

  • Clicking on the canvas, or
  • Entering both the base and height.

Dimensions of the Triangle

= 12 × base × height