1 citations · 1 across the 8 of their papers we have counts for
8 papers
Perspective Central Triangles Formed from a Triangle and a Transversal
Stanley Rabinowitz, Ercole Suppa
Let be a line not passing through any vertex of a triangle and not parallel to any side. Line meets the sidelines , , of at points…
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…
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…
A Triad of Circles Associated with a Triangle
Ercole Suppa, Stanley Rabinowitz
We study some properties of a triad of circles associated with a triangle. Each circle is inside the triangle, tangent to two sides of the triangle, and externally tangent to the c…
Properties of Ajima Circles
Stanley Rabinowitz, Ercole Suppa
We study properties of certain circles associated with a triangle. Each circle is inside the triangle, tangent to two sides of the triangle, and externally tangent to the arc of a…
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…
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…