Typography of Geometry Problem 834: Parallelogram, Diagonal, Similarity, Geometric Mean, iPad Apps

Proposition

The figure below shows a parallelogram ABCD. E is a point on AD, BE cuts diagonal AC at F and CD extended at G. Prove that BF is the geometric mean or mean proportional of FG and FE.

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Geometric Art using Mobile Apps

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.

See also:
Original problem 834