Area of Trapezium Demonstration

midpoint

Rotate = 0 rad (slider from 0 to 3.141592653589793, step 0.0017453292519943296)
e = false
A = (2.8778009886715283, 2.5359002584910013)
b = OrthogonalLine(A, a)
B = Point(b)
C = (0.2547905504480004, 0.04683077881505752)
c = Line(C, b)
D = Point(c)
d = Segment(C, A)
f = Segment(B, D)
g = Segment(A, B)
h = Segment(C, D)
E = Midpoint(f)
poly1, a_1, b_1, d_1, c_1 = Polygon(A, B, D, C)
A' = Rotate(A, Rotate, E)
B' = Rotate(B, Rotate, E)
D' = Rotate(D, Rotate, E)
C' = Rotate(C, Rotate, E)
poly1', a', b', d', c' = Polygon(A', B', D', C')