SOLUTION: Let ABC be an equilateral triangle. How many squares in the same plane as ABC share two vertices with the triangle?

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Question 1189905: Let ABC be an equilateral triangle. How many squares in the same plane as ABC share two vertices with the triangle?
Answer by ikleyn(52814) About Me  (Show Source):
You can put this solution on YOUR website!
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Let ABC be an equilateral triangle. How many squares in the same plane as ABC
share two vertices with the triangle?
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Since the problem says nothing about possible overlaying the squares,  I will assume
that overlaying is allowed and is not an issue.

Then each side of the triangle determines three such squares:

        - two squares on different sides of the side that share the side,

        - plus one square which has a diagonal coinciding with the side.


ANSWER.   In all,  there are  3 * 3 = 9  such squares.

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I answered this question assuming that squares must share their vertices with that of the triangle.