# Equation of a circle given three points

Use the circle tool to construct a circle that passes through all 3 points

Try to draw the circle using only "circle with Center through Point" tool

What makes the previous task difficult?

## How can we use the circle theorem below to find the centre of the circle which passes through all 3 points?

Draw line segments between each of the points, and perpendicular bisectors for each of them. What do you notice

Try to draw the circle using only "circle with Center through Point" tool