Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In geometry, the Brocard circle (or seven-point circle) for a triangle is a circle having a diameter of the line segment between the circumcenter and symmedian. It contains the Brocard points. The Brocard circle is named for Henri Brocard. Pierre René Jean Baptiste Henri Brocard (12 May 1845 16 January 1922) was a French meteorologist and mathematician, in particular a geometer. His most well-known achievement is the invention and discovery of the properties of the Brocard points, the Brocard circle, and the Brocard triangle, all bearing his name.