Question

A triangle has points R(-2,0) ,S(2,8) and T (8,2) as shown in the group. M is the midpoint of RT . What is the length of SM

Answer 1

The midpoint is calculated by averaging the coordinates of its endpoints:

`M = \left((-2+8)/(2),(0+2)/(2)\right)=(3,1)`

Now we can use the usual distance formula to get the length of SM:

`SM=√((2-3)^2+(8-1)^2)=√(1+49)=√(50)`