Area of Parallelograms, Trapeziums, and Kites
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Area of Parallelograms, Trapeziums, and Kites
Area worksheet for Grade 8: find the area of parallelograms and trapeziums in mm, cm, and m, the area of a kite from its diagonals and a diagonal from its area, and see how each formula comes from a rectangle. With an answer key.
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Make a new sheetSheet 38 of 100, each with its own answer key · Back to Sheet 1
- Pages
- 1
- Last updated
- Time
- About 15 minutes
- Answer key
- Included
- Printing
- Black and white
- Related curriculum
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Find the area of parallelograms, triangles and trapezoids by cutting and moving parts to make rectangles, then with their formulas, and find the area of shapes made of these.
Reviewed by Mr. Robert Harrison, Teacher. How we check worksheets
How to use this sheet
- Have the child mark the base and the height of each shape before using a formula.
- Show why a triangle is half a rectangle by drawing the rectangle around it.
- For composite figures, have the child split the shape and label each part with its area.
Common mistakes
- Using a slanted side as the height. The height is straight up from the base, at a right angle.
- Forgetting to halve for a triangle, so the area is base × height.
- For a trapezoid, using only one base. Add the two parallel sides, then halve and multiply by the height.
