# Equations of Lines (Perpendicular / Right Bisectors and Circumcentre)

1. 1
Given a triangle with vertices A(9,10), B(3,-8) and C(-7,2) find:

a) The equation of the perpendicular bisector of BC.
b) The equation of the perpendicular bisector of AB.
c) The circumcentre of the triangle ABC.
2. 2
Given a triangle with vertices A(-8,3), B(2,-7) and C(10,9) find:

a) The equation of the perpendicular bisector of AC.
b) The equation of the perpendicular bisector of AB.
c) The circumcentre of the triangle ABC.
3. 3
Given a triangle with vertices A(-6,-3), B(10,-11) and C(4,7) find:

a) The equation of the perpendicular bisector of AB.
b) The equation of the perpendicular bisector of BC.
c) The circumcentre of the triangle ABC.

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