

Plane Geometry: Open Problems, High School, College


Open Geometry Problems  Index 6


College Geometry Online


Geometry Problem 884: The Pythagorean Curiosity
Post a solution
Right
Triangles and squares, fifteen conclusions. 

Geometry Problem
738.
Post
a solution
Intersecting Circles, External Common Tangent, Common Chord, Secant, Circumcircle, Cyclic Quadrilateral, Concyclic Points. 

Geometry Problem
724.
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a solution
Circumscribed Quadrilateral, Circle, Angle, Incenter, Half
the Measure. 
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By Antonio Gutierrez






