Area of a trapezium / trapezoid

Trapezium? Trapezoid? You might not realise it but - regardless of which country you're from - the area of this polygon comes in handy more often than you'd think—like when calculating the surface of a sloped roof or the shape of a skate ramp. Trapeziums pop up in design, engineering, and architecture, so learning how to find their area is a clever bit of maths with real-world power! Jump to the questions

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