The figure below shows a square ABCD inscribed in a circle of center Q and a right triangle AED (angle AED = 90 degrees) with inradius r. If r1 is the radius of a circle tangent to AE, ED, and arc AD, prove that r1 = r.sqrt(2).
Geometric art is a form of art based on the use and application of geometric figures. A geometric figure is any set or combination of points, lines, surfaces and solids.
A mobile app or mobile application software is a computer program designed to run on smartphones and tablet computers.
Original problem 1292