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Areas of Triangles, Parallelograms and Trapezia

In this worksheet, students find the areas of triangles, parallelograms and trapezia.

'Areas of Triangles, Parallelograms and Trapezia' worksheet

Key stage:  KS 3

Curriculum topic:   Geometry and Measures

Curriculum subtopic:   Derive and Apply Formulae

Difficulty level:  

Worksheet Overview

QUESTION 1 of 10

In this worksheet, we will find the areas of triangles, parallelograms and trapezia.

You should already know the formulae for finding the areas of triangles and parallelograms.

 

Area of parallelogram = base x height

 

Area of triangle = ½ base x height

 

Area of trapezium = Average of parallel sides x height

 

Example

 

Find the area of this shape?

Area of trapezium = ½ ×(3 + 12) × 10 = 7½ x 10 = 75 sq. units

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