# Exercise 3, p 193 Platinum Q 3 P(2;3) Q(-4;-1) and R(6;-3)

Exercise 3, p 193 Platinum Q 3
P(2;3) Q(-4;-1) and R(6;-3) have been joined to form PQR.
a)Show that PQR is right angled by using
i) gradients
ii) distances
c) What type of triangle is PQR?
d) Write down the size of angle Q.
e) S has been plotted to form the fourth point of the parallelogram PQRS.
i) Write down the co-ordinates of S by inspection.
ii) Determine the coordinates of S by calculation
f) What is the size of angle QPS? Explain how you got your answer.

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