In the figure below, CD and EF are the common internal tangents to the circles A and B. CF extended intersects the circles A and B at G and H, respectively. Prove that the chords CG and HF are congruent.
contributed by Markus Heisss, Wurzburg, Bavaria. Published in:
"Die Wurzel - Zeitschrift fur Mathematik", Dec. 2005,
Original problem 1380.
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.