Seitenlängen

Die Strecken  \overline{ DE } und  \overline{ AB } sind parallel  

Das Dreieck DEC ist gleichschenklig

parallele Strecken

Dreieck

μ = 120°

Anfang

a = 4 (slider from 0 to 4, step 0.1)
F = (-1, -1)
G = Point(Circle[F, a])
b = Segment(F, G)
c = Semicircle(G, F)
H = Midpoint(b)
d = OrthogonalLine(H, b)
C = Point(d)
e = Segment(H, C)
A = Point(e)
B = (5.998796370229672, 0.5345668023564815)
poly1, d_1, e_1, f = Polygon(A, B, C)
G_1 = Point(e)
g = Circle(C, G_1)
E = Intersect(g, e_1)
D = Mirror(E, e)
h = Segment(D, E)
J = Intersect(h, e)
poly2, j, i, d_2 = Polygon(D, C, J)
k = AngularBisector(J, D, C)
K = Intersect(e_1, k)
w = Ray(D, K)
δ = Angle(J, D, C)
γ = Angle(D, C, E)
ε = Angle(C, E, J)
φ = Angle(C, K, D)
μ = Angle(w, e_1)
β = Angle(C, B, A)
p = CircleArc(C, D, E)
abstandBA = Distance(B, A)
umfangpoly1 = Perimeter(poly1)
abstandAC = Distance(A, C)
TextAC: "\overline{" + (Name[A]) + (Name[C]) + "} \, = \, " + abstandAC
abstandBC = Distance(B, C)
TextBC: "\overline{" + (Name[B]) + (Name[C]) + "} \, = \, " + abstandBC
abstandAB = Distance(A, B)
TextAB: "\overline{" + (Name[A]) + (Name[B]) + "} \, = \, " + abstandAB
l = false
α = Angle(B, A, C)
ζ = Angle(D, K, E)
m = false
n = false
q = Segment(D, E)
r = Segment(E, K)
s = Segment(K, D)
o = false