The formula for the area of a triangle is \( \text{area} = \frac{1}{2} \times \text{base} \times \text{height} \).
The formula for the area of a parallelogram is \( \text{area} = \text{base} \times \text{height} \).
For both formulae you must use the perpendicular height; that is, the height which is at right angles to the base.
For harder questions you may need to rearrange the formulae.
Apologies, the questions sheet for this section is currently missing.
Area of triangles and parallelograms - worked solutions