Question 1073300
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Let ABCD be our rectangle and let O be the intersection point of its diagonals.

We are given that the angle (angles) AOD and BOC are of 60° each.

It implies that the triangle AOD is an equilateral triangle, as well as BOC is an equilateral triangle.


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<U>Answer</U>. The length of the diagonal is 12 inches.



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