Question: The points P, Q and R have coordinates (2, 1), (6, 2) and (2, 18) respectively. a) Use Pythagoras' theorem to show that PQR is

The points P, Q and R have coordinates (2, 1), (6, 2) and (2, 18) respectively.

a) Use Pythagoras' theorem to show that PQR is a right-angled triangle.

b) Hence find the equation of the circle that
passes through P, Q and R.

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