Drehe Dreieck 
um Mittelpunkt M_a 

c=

cm

Höhe anzeigen

A = (-3, 2)
B = (1, 2)
C = (-2, 5)
poly1, c, a, b = Polygon(A, B, C)
α = 0 rad (slider from 0 to 3.141592653589793, step 0.017453292519943295)
M_a = Midpoint(C, B)
A' = Rotate(A, -α, M_a)
B' = Rotate(B, -α, M_a)
C' = Rotate(C, -α, M_a)
poly1', c', a', b' = Polygon(A', B', C')
d = Distance(c, c')
D = Point(c)
h_c = Segment(C, D)
β = Angle(C', D, C)
umfangpoly1 = Perimeter(poly1)
e = false