Classifying a Triangle In Exercises 29–32, find the lengths of the sides of the triangle with the indicated vertices, and determine whether the triangle is a right triangle, an isosceles triangle, or neither.
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An isosceles triangle is circumscribed about the unit circle so that the equal sides meet at the point (0,a) on the y-axis (see the figure). Find the value of a that minimizes the lengths of the equal sides. (you may be surprised that the result does not give an equilateral triangle)
