Two circles intersect at points
Let
a) The radius of the inscribed circle of the triangle is
b) The radius of the circle that is tangent to the hypotenuse and the extensions of the sides of the triangle, is equal to
From a point
Two circles have radii
Let
A polygon is drawn around a circle of radius
The point
The diagonals of the quadrilateral
Prove that a convex quadrilateral
Prove that a convex quadrilateral