3.2 In the diagram below, the equation of line AB is y-x-1=0 and the equation of
line BC is y + x-3=0.
A(-1;-2)
B
3.2.1 Prove that B = 90⁰
3.2.2 Determine the coordinates of B.
3.2.3 Calculate the length of AC.
3.2.4
C(6; -3)
Is Triangle ABC an isosceles triangle? Justify your answer with appropriate
calculations.
3.2.5 If the coordinates of B are (2; 1), determine the midpoint of AB.
3.2.6 Hence or otherwise, determine the coordinates of D in the second
quadrant such that ABCD is a parallelogram
3.2.7 Determine the area of Triangle ABC
(3)
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TOTAL: 50