You can click on the black points and it will become highlighted, then you can use the arrow keys to control it. It will also show you the X and Y of the highlighted point. Watch as the center moves along with the points. Also observe the coordinates. Try to find a formula for centroids. Also, if you want to cancel highlight, press space.
Please leave a love and favorite! This is for my math class, we're doing centroids. The orange dot represents the centroid of the triangle. The centroid splits the triangle into 6 equal parts. The blue points are not draggable and they are the midpoints of the segments. Press 1 to show the coordinates, Press 2 to hide the coordinates