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Year 9 Interactive Maths - Second Edition


Area of Other Figures

Knowledge of finding the area of rectangles and triangles enables us to find the area of other plane figures.  For example, we can find the area of plane figures such as a parallelogram, trapezium, rhombus and kite.


Area of a Parallelogram

A parallelogram is a quadrilateral that has two pairs of parallel sides of equal length.


Recall that:


Example 12

Find the area of the following parallelogram.

Solution:

So, the area of the parallelogram is 360 cm2.


Remember:
  • A parallelogram is a quadrilateral that has two pairs of parallel sides of equal length.
  • The area of the parallelogram is given by the following formula where b is the length of the base of the parallelogram and h is its perpendicular height.

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