# Geometry Problem 1500: Circle, Perpendicular, Tangent, Secant, Cyclic
Quadrilateral, Parallel, Similarity, Measurement

In the
figure, HT is tangent to the circle O at T. If EF = 15 and FH = 12, find HT.

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## Typography and Sketch of Problem 1497: Statue of Liberty in the
background

### 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.