Theorem 1 The angle in a semi- circle is a right angle.
Given PQ is a diameter of a circle C(O,r) and is an angle in semi- circle. To prove PROOF We know that the angle subtended by an arc of a circle at its centre is twice the angle formed by the same arc at a point on the circle. So, we have
[ is a straight line] |
The area of the largest triangle that can be inscribed in a semicircle whose radius is r cm is : | |||
Right Option : B | |||
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Right Option : B | |||||
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If two diameters of a circle intersect each other at right angles, then quadrilateral formed by joining their end points is a | |||
Right Option : D | |||
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It was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
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