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Frank Morley was a member of Haverford College's Department of Mathematics in the early part of the twentieth century. He is credited with being the first to arrive at the celebrated Morley's trisector theorem:

"The three points of intersection of the adjacent angle trisectors of any triangle form an equilateral triangle."

See also:
Morley's Theorem - Puzzle

Morley's Trisector Theorem: HTML5 animation


 

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