The ratio between the areas of two triangles
Given is a triangle   whose area is S . Each side is extended by a factor p multiplied by its length, to obtain a new triangle,  ..
The applet allows to investigate  the ratio between the areas of  the two triangles.
The applet permits one to drag the vertices A and C, and thus to change the size of the original triangle. In addition, a ruler for p allows its value to be changed in the range  .