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math.GM2022
Relationships between a Central Quadrilateral and its Reference Quadrilateral
Stanley Rabinowitz, Ercole Suppa
Let P be a point inside a convex quadrilateral ABCD. The lines from P to the vertices of the quadrilateral divide the quadrilateral into four triangles. If we locate a triangle cen…
math.HO2022★ 1 cited
The Shape of Central Quadrilaterals
Stanley Rabinowitz, Ercole Suppa
The diagonals of a quadrilateral form four component triangles (in two ways). For each of various shaped quadrilaterals, we examine 1000 triangle centers located in these four comp…
math.HO2022
Computer Investigation of Properties of the Gergonne Point of a Triangle
Stanley Rabinowitz, Ercole Suppa
The incircle of a triangle touches the sides of the triangle in three points. It is well known that the lines from these points to the opposite vertices meet at a point known as th…