Key learning points

1. It is possible to find a relationship between triangles and parallelograms.
2. You can use this relationship to find a formula for the area of a triangle.
3. It is possible to identify the base and perpendicular height of any triangle even when they are not obvious.
4. The formula can be used to find the area of any triangle.

Keywords

• Base - The base is the side which is perpendicular to the height.

• Perpendicular height - The perpendicular height is the perpendicular distance from the base to the opposite vertex.

Common misconception