Area of Parallelograms

Ages 913

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Area of Parallelograms

A parallelogram has two pairs of parallel sides. Its area is base × height. Do not use the slanted side — use the perpendicular height!

Your goals

  • You can calculate the area of parallelograms.
  • You can use parallelogram, perpendicular height correctly.
  • You can multiply the base by its perpendicular height.

Words to know

parallelogram:
A quadrilateral with two pairs of parallel opposite sides.
perpendicular height:
The shortest distance between the chosen base and the opposite side.

Examples

  • 1Base 12 cm, height 5 cm: Area = 12 × 5 = 60 cm²
  • 2Base 7 cm, height 9 cm: Area = 7 × 9 = 63 cm²

Check these

  • Do not use the sloping side instead of the perpendicular height.
  • Keep every number, symbol, label, and unit in its correct place.
  • Show enough working to check how you reached your answer.

Helpful habits

  • Read the whole question before choosing what to do.
  • Show one clear step at a time and check each step.
  • If you are stuck, draw a model, try smaller numbers, or revisit the example.

Now try your own

Create your own area of parallelograms example, solve it, and explain how you checked it.

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