Perpendicular bisector of B & C has a gradient of -¼
AB is perpendicular to BC
Midpoint of A & B is (-1,2·5)
Length of AB is √17
Midpoint of A & C is (½,½)
Gradient of BC is -4
A & C are points on the line 3y = 5x + 4
Gradient of AC is 5/3
Equation of line through B & C is y+4x+10=0
Perpendicular bisector of A & C is 5y+3x-1=0
AC is Area of perpendicular to triangle ABC AB = 8·5cm²
The co-ordinates of A, B and C are (1,3), (-3,2) and (-2,-2) respectively. Which of the cells are correct?