See also:
Art of problem 1439, Generative Sketching.
Circles O and Q intersect at A and B so that O is on circle Q (as shown in the figure). C is a point on circle O and OC extended cuts circle Q at D. The perpendicular bisector of CD cuts circle Q at E. Prove that points A, C and E are collinear.
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.