Congruence Shortcuts GSP
... Drag the point labeled B (drag) in the broken triangle on the left so that it coincides with the other point B to form a triangle. In the broken triangle on the right, try to make the points labeled B coincide so that the triangle formed is not congruent to the triangle on the left. Change the lengt ...
... Drag the point labeled B (drag) in the broken triangle on the left so that it coincides with the other point B to form a triangle. In the broken triangle on the right, try to make the points labeled B coincide so that the triangle formed is not congruent to the triangle on the left. Change the lengt ...
Apollonian network
In combinatorial mathematics, an Apollonian network is an undirected graph formed by a process of recursively subdividing a triangle into three smaller triangles. Apollonian networks may equivalently be defined as the planar 3-trees, the maximal planar chordal graphs, the uniquely 4-colorable planar graphs, and the graphs of stacked polytopes. They are named after Apollonius of Perga, who studied a related circle-packing construction.