Trapezoid

Definition: A trapezoid is a quadrilateral with two parallel sides.

To play with trapezoid, Refer to GeoGebra

Trapezoid

• Scalene trapezoid: No equal sides.
• Isosceles trapezoid: Two legs are equal.

Area of trapezoid

Trapezoid inscribed in a circle

• Remember that a trapezoid has to have TWO BASES to be parallel.
• Know that, a quadrilateral CAN be inscribed in a circle or even a semicircle, which means 4 vertices are all on the circle.
• Since it’s a trapezoid, and inscribed in a circle, then IT HAS TO BE A ISOSCELES TRAPEZOID. No matter its side crosses the centre or not.