- #1

trollcast

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## Homework Statement

Points A B and C lie on the circumference of a circle where

$$A =(-3,2)\\B=(-1,6)\\C=(7,2)$$

Show that AC is the diameter of the circle.

## Homework Equations

## The Attempt at a Solution

Would it be sufficient to show that the angle ABC is a right angle and therefore by the inscribed angle theorem that any angle subtended from a diameter is a right angle?