Circle from three points
Exploring how we could find the equation of a circle if given 3 points.
The three points are points on the circle.
Use them to find the equation of the circle
Use the steps below to answer the following questions.
Use the applet to check your method of finding the equation of the circle.
Step 1: What do we need to draw first?
Step 2: How would I find the equation of the perpendicular bisectors? Remember I need to find both a point and the slope.
Step 3: What would I need to do with the equations of the perpendicular bisectors to find the centre?
Step 4: How would I find the length of the radius?