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Drag
the trapezium to the horizontal line below. Then drag another equal
trapezium and put it inverted on its right or on its left.
Check
that you can form a parallelogram with two equal trapeziums.
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- What is
the relation between the base and the perpendicular height of the trapezium
and the base and the perpendicular height of the parallelogram?
- What
is the ratio of the area of a trapezium to the area of the parallelogram?
- With this
information, deduce the formula for the area of the trapezium. Write it
down in your notebook.
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