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AB is a diameter of a circle and C is any point on the circumference of the circle. Then (a) the area of `DeltaABC` is maximum when it is isosceles (b) the area of `DeltaABC` is minimum when it is isosceles (c) the perimeter of `DeltaABC` is minimum when it is isosceles (d) none of these

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AB is a diameter of a circle and C is any point on the circumference of the circle.Then (a) the area of Delta ABC is maximum when it is isosceles (b) the area of Delta ABC is minimum when it is isosceles (c) the perimeter of Delta ABC is minimum when it is isosceles (d) none of these

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