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Geometry

Area of a Triangle

Formula
A = ½ × b × h

What is Area of a Triangle?

The area of a triangle equals half the product of its base and height. The height must be perpendicular to the base.

Variables

  • A
    A — Area
  • b
    b — Base of the triangle
  • h
    h — Height (perpendicular to base)

Worked Examples

Example 1

Find the area of a triangle with base 10 cm and height 6 cm.

Solution:

A = ½ × 10 × 6 = 30 cm²

Frequently Asked Questions

Related Formulas

Area of a Circle

A = π × r²

Circumference of a Circle

C = 2 × π × r

Area of a Rectangle

A = l × w

Pythagorean Theorem

a² + b² = c²

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