ABC, angle BAO = angle OAC = 20 degrees, angle ACO = 10 degrees,and angle
OCB = 30 degrees. Prove that angle
OBC = 80 degrees. Try to use elementary geometry (Euclid's Elements.)
Art of Geometry Problem 2 using Mobile Apps. Circle Patterns.
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.
kaleidoscope of problem 2.
Sketch of problem 2