Areas of rhombuses and parallelograms: |
We know: The area of a rectangle = length × width But what about the area of a parallelogram? A parallelogram can be thought of as a rectangle and two right-angled triangles. |
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| The two right-angled triangles join
together to to make a rectangle. This suggests that a parallelogram is just like
a rectangle. If we take the gap between the longest sides as the width, and the
longest side is the length, then:
The area of a parallelogram |
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A rhombus, as we know, has equal sides,
and can be chopped up in a similar way, but this time we end up with a square!!
So we can say:
The area of a rhombus |
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