equilateral triangle =all sides are equal

In equilateral triangles all angles are equal to 60°.

In isosceles triangles two base angles  are equal

in isosceles triangle any of the two sides are equal.

A = (-3.1608118393234674, 7.453234672304435)
B = (-3.9449302325581397, 4.393674418604651)
C = (0.2150697674418604, 4.393674418604651)
t1, c, a, b = Polygon(A, B, C)
D = (5.427348837209302, 7.317953488372094)
E = (2.8873488372093026, 3.037953488372094)
poly1, f, g, h, F = Polygon(D, E, 3)
δ = Angle(D, F, E)
ε = Angle(E, D, F)
ζ = Angle(F, E, D)
ν, ξ, ο = InteriorAngles(poly1)
text1: "scalene triangle " + a + "≠" + b + "≠" + c + ""
text2: "" + δ + "=ε=" + ν + "=60"
d = true
i = true
G = (-3.5885327695560254, -2.6995095137420706)
H = (1.5666300211416462, -2.654486257928117)
j = Segment(G, H)
H' = Rotate(H, 45°, G)
α = Angle(H, G, H')
k = Segment(G, H')
G' = Rotate(G, (-(45°)), H)
η = Angle(G', H, G)
l = Segment(H, G')
I = Intersect(k, l)
J = Point(k)
u = Vector(G, J)
K = Point(l)
v = Vector(H, K)
e = true
m = true
text3: "equilateral triangle : all the three sides areequal." + f + "=" + g + "=" + h + ""
text4: "isosceles triangle: any two sides ar equal" + k + "=" + l + ""