Question

two tangents on a circle intersect each other at 90degree then prove that the quadrilateral formed from the radii through contact point and tangent is a square​

Answer 1

Answer:

The angles formed between the tangents and the radii is 90 degree.  

Since the sum of angles of the quadrilaterals is 360 degrees. And we have two 90 degrees angles formed within it.

Hence the remaining sum of angles i.e sum of angles formed between both radius and the angles between both the tangents is 360-180=180 degrees.