If the coordinates of t (sides AB and AC)of a ΔABCare (3,5) and (−3,−3)respective3ly,then write the length of side BC.
Now,DE=√(3+3)2+(5+3)2=√36+64=√100=10 units⇒DE=10 unitsNow,BC=2DE[Using mid−point theorem]=2×10=20 units⇒BC=20 units.