| Now let's explore the circle on the coordinate plane. |
| When a circle is positioned on the coordinate plane, the distance between the centre and a point on the circle can be calculated. This distance is called the radius of the circle. |
| You calculate this distance using the Distance Formula. |
The distance formula is:
d = |
Ö | _________________
(x2 - x1)2 + (y2 - y1)2 |
= [(x2 - x1)2 + (y2 - y1)2]½
|
where d is the distance between any two points (x1, y1) and (x2, y2) in the plane. |
| How is the Distance Formula related to the Pythagorean Theorem? |
| Follow the steps in the questions below to calculate the radius of a circle centred at P that goes through the point Q, and then construct this circle. |
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