Diagram not to scale
A Level Maths Notes: C1- Coordinate Geometry - Triangles and Normals
Diagram not to scale
Typically in coordinate geometry we are concerned with lines and normals, distances and circles.
We may be of, for the above diagram:
a)Show that AC is perpendicular to AB.
b)Find the distance AB.
a) Gradient of
Gradient of
The product of the gradients is -1 so AC and AB are at right angles.
b)