Seneca
Sign up

Finding the Area of a Triangle

11+ Maths, topic 8.3.1

Finding the Area of a Triangle

A triangle is half a quadrilateral. So to find the area, you need to multiply the base by the height and then divide your answer by 2.

Equation for triangle area

Equation for triangle area

  • Use this equation to work out the area of a triangle.
Example problem

Example problem

  • Find the area of this triangle.
1) Multiply base by height

1) Multiply base by height

2) Divide (base x height) by 2

2) Divide (base x height) by 2

Test yourself on Finding the Area of a Triangle

  • What's the area of this triangle?

  • What's the area of this triangle?

Practise this topic for free