Sample Activity

Perpendicular bisector of
B & C has a gradient of -¼
AB is perpendicular to BC Midpoint of
A & B is
Length of AB
is √17
Midpoint of
A & C is
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
Perpendicular bisector of
A & C is
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?