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A circle touches all the four sides of a quadrilateral ABCD. Prove that AB + CD = BC + DA
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Question 3
Let RS be the diameter of the circle where S is the point Let P be a variable apoint (other than ) on the circle and tangents to the circle at meet at the point Q.The normal to the circle at P intersects a line drawn through Q parallel to RS at point E. then the locus of E passes through the point(s)- (A) (B) (C) (D) 
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| Question Text | A circle touches all the four sides of a quadrilateral ABCD. Prove that AB + CD = BC + DA |
