Poster of Geometry Problem 80: Triangle Area, Sides, Inradius, Nazca Lines in the background, iPad Apps

Proposition

Given a triangle ABC of area S, the incircle of center I and inradius r. If AC = b and AB = c, prove that area of triangle DIE is equal to r2.S/(b.c).
 

Poster of Geometry Problem 80: Triangle Area, Sides, Inradius, Nazca Lines in the background. Math Infographic, Tutor

See also:
Original problem 80.

Geometric Art using iPad or 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.
 

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