A rectangle has two pairs of equal sides. It has four right angles (90°). The opposite sides are parallel. The diagonals bisect each other. A parallelogram has two pairs of equal sides. It has two ...

A circle is inscribed within an isosceles trapezoid. All four sides of the trapezoid are tangent to the circle. Angle θ has a measure of 72.7325641 degrees; the trapezoid has an area of 2,368 square ...