2 citations · 5 across the 8 of their papers we have counts for
8 papers
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…
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…
Catalog of Properties of the First Isodynamic Point of a Triangle
Stanley Rabinowitz
The first isodynamic point of a triangle is one of many notable points associated with a triangle. It is named X(15) in the Encyclopedia of Triangle Centers. This paper surveys kno…
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…
Relationships Between Circles Inscribed in Triangles and Related Curvilinear Triangles
Stanley Rabinowitz
If P is a point inside triangle ABC, then the cevians through P extended to the circumcircle of triangle ABC create a figure containing a number of curvilinear triangles. Each curv…
Arrangement of Central Points on the Faces of a Tetrahedron
Stanley Rabinowitz
We systematically investigate properties of various triangle centers (such as orthocenter or incenter) located on the four faces of a tetrahedron. For each of six types of tetrahed…