By drawing in the equilateral. triangle formed by the circles’ centers and adding a large. circle centered on this triangle, he found and proved. Theorem I: The ratio of the diameter of the ...

A peer-reviewed study in the Journal of Mathematics and the Arts reported that an equilateral triangle traced from the navel ...

THE principal novelties in this tract are the chapters on the orthopole (with some original propositions by the author) and on orthogonal projection (mostly after Prof. Neuberg). A pretty theorem ...

The reason the shape changes from 3D to 2D when you get to six triangles has to do with the number of degrees in an equilateral triangle. There are 60 degrees at each vertex of the triangle, so ...