# Circumcircles Intersecting at the First Fermat Point

Requires a Wolfram Notebook System

Interact on desktop, mobile and cloud with the free Wolfram CDF Player or other Wolfram Language products.

Requires a Wolfram Notebook System

Edit on desktop, mobile and cloud with any Wolfram Language product.

Let ABC be a triangle. On AB, BC, and AC draw equilateral triangles on the outside of ABC with their outside vertices named C', A', and B', respectively. Then AA', BB', and CC' and the circumcircles of the three equilateral triangles intersect at one point, the first Fermat point F.

Contributed by: Jay Warendorff (March 2011)

Open content licensed under CC BY-NC-SA

## Snapshots

## Details

See Fermat point.

## Permanent Citation

"Circumcircles Intersecting at the First Fermat Point"

http://demonstrations.wolfram.com/CircumcirclesIntersectingAtTheFirstFermatPoint/

Wolfram Demonstrations Project

Published: March 7 2011