There’s a treasure map that says the treasure lies buried at a spot equidistant from points A, B, and C. If you were on this island, how would find the treasure? The answer involves finding the circumcenter of a triangle.

Originally released by PBS, 2012. Streaming video file encoded with permission for digital streaming by Infobase on February 13, 2017.

Mathematica: Finding the Centers of Circles Inscribed or Circumscribed with Triangles (9:40); .