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math.HO2025
More Shapes of Central Quadrilaterals
Stanley Rabinowitz, Ercole Suppa
Let E be a point in the plane of a convex quadrilateral ABCD. The lines from E to the vertices of the quadrilateral form four triangles. If we locate a triangle center in each of t…
math.GM2025
More Relationships between a Central Quadrilateral and its Reference Quadrilateral
Stanley Rabinowitz, Ercole Suppa
The diagonals of a quadrilateral form four associated triangles, called half triangles. Each half triangle is bounded by two sides of the quadrilateral and one diagonal. If we loca…