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The
Folded Triangle
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Strategies
and Hints
- Using the directions in the hints, students should get the figure shown.
Solution
Using
the Law of Cosines with the two bottom white triangles results in b
= 
and
c = 7. Then, using the top white triangle, a = 
.
In each case, the 60° angle is one of the three angles of the original
equilateral triangle.
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