Quadrelateral
Two trapezoid
Half of a hexagon is a trapezoid.
one the trapezoid only folds in half
triangle
2 triangels
If you want to, you can always draw a circle around an isosceles trapezoid and the radius can be half the base of the trapezoid.
Triangle: Half the product of the longest side and the perpendicular distance from it to the apex. Trapezoid: Half the product of the sum of its bases and the height.
The area of a trapezoid is equal to half the sum of the lengths of the two parallel sides (base1 and base2) multiplied by the height. The formula for the area of a trapezoid is A = (base1 + base2) * height / 2.
you get a trapezoid
a trapezoid
split it in half