triangle PQR is a right triangle in the Cartesain plane with right angle at R.P = (-2,1), Q = (4,3) and R lies vertically above P. the midpoint of PQ is M.
WHITCH ONE OF THE FOLLOWING IS/ARE TRUE?
C. D (R,M) = (( sqeare root of 5 ) units)
it should be letter B
the formula of midpoint is
the answer is M = (1,2)
R is verticaly above P so their x co-ord are the same, and as the angle at R
Originally Posted by Alexander
is right the y co-ord of R is the same as Q, so R is (-2,3)
The mid point of PQ is ((-2+4)/2, (1+3)/2)=(1,2)
The distance from R to M is sqrt((-2-1)^2+(3-2)^2) = sqrt(10).