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Mathematics 10 Online
OpenStudy (anonymous):

A billiards triangle is equilateral. What is its perimeter? (Note: The illustration is of an equiangular triangle drawn from one side.) 10 1/4 in. 5 1/8 in. 33 3/4 in. 11 1/4 in.

Directrix (directrix):

@whitebread Please post the diagram. Thanks.

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