Sample Activity

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 perpendicular to AB Area of triangle ABC
= 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?

EXIT