GeoGebra is a interactive mathematics software which can be used for a variety of processes. In this case we will be using it to create a nine point circle when given a certain triangle. using GeoGebra we will plot the vertices of the triangle and create it as well as use geometric tools to find perpendicular bisectors of sides, find the altitudes of the triangle, create intersection points, find the mid point of line segments, determine the orthocenter and circumcenter of the triangle and more. the link below is a worksheet which contains specific directions on how to create the nine point circle in GeoGebra as well as images for you to compare your work to for each step.
https://docs.google.com/document/d/1AwfeK04vZPsURYJ8Ft4Nn-qN9oLj7OXUARgWJmcWTlM/edit?usp=sharing