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3 equilateral triangles in a rectangle (Posted on 2020-02-28) Difficulty: 3 of 5
Let ABCD be a rectangle with DA=12.
ABJ is an equilateral triangle with J inside ABCD.
CHI and EGF are congruent equilateral triangles with E and F on DA, H on CB, J on FG, and E, I, G, H collinear.

Find EF.

See The Solution Submitted by Jer    
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  Subject Author Date
re: My attemptJer2020-03-14 17:39:47
SolutionMy attempttomarken2020-02-28 11:02:16
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