How does mean, median, standard deviation, and correlation change if you 1) add
How does mean, median, standard deviation, and correlation change if you 1) add X units to the sample data and 2) if you change the unit of measurement of the data (like inches to centimeters)
Simply construct the angle bisectors of the three angles of the triangle. The point where the angle bisectors intersect is the incenter. Actually, finding the intersection of only 2 angle bisectors will find the incenter.