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Problem 247.
Napoleon's Theorem II. Internal Equilateral triangles.
Inner triangle
In the figure, equilateral triangles
ABC", BCA", and ACB" are constructed internally on the sides of a triangle
ABC. Prove that the centers A2, B2, and C2 of those equilateral triangles form an equilateral triangle,
called the inner Napoleon triangle.
Post
a
comment.
See also:
Problem
246
Equilateral Triangle
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