You may be asked to show that two circles are touching, and say whether they're touching internally or externally. To do this, you need to work out the radius and the centre of each circle.

Show that the line \(y = 2x + 1\) intersects the circle \({x^2} + {y^2} - 6x - 7y + 9 = 0\) and determine the points of intersection. Therefore the line \(2x + 1 ...

The three intersections with the most accidents include: Acton Circle and Smokey Park ... In general, most accidents happen at an intersection, said Jeff Moore, traffic engineer for the city. "That's ...