PDF (Acrobat) Document File
Be sure that you have an application to open this file type before downloading and/or purchasing.
This is a one page summary of 4 triangle centers - orthocenter, circumcenter, centroid, and incenter. Each center is shown for acute, right, and isosceles triangles. The mnemonic includes the construction needed to find the center.
This is the first page of a larger file that includes a page for each center as well as the Euler line.