See also:

Art of problem 1438, Circular Dissolve.

I, G, and O are the incenter, centroid and circumcenter of a triangle ABC so that IG is parallel to BC. Prove that the measure of the angle AIO is 90 degree.

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.

Geometry Problems

Open Problems

Visual Index

Ten problems: 1411-1420

All Problems

Triangle

Circle

Incenter

Centroid

Circumcenter

Parallel lines

90 Degrees

Geometric Art

Geometry for Kids

iPad Apps

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