Key learning points

1. A theorem is a statement that can be demonstrated to be true by accepted mathematical operations and arguments
2. Theorems can be thought of as puzzles to solve, you are showing how to find a result
3. In order to use this theorem, you may need to draw a diagram or add more information to an existing one

Common misconception

Keywords

• Tangent - A tangent of a circle is a line that intersects the circle exactly once.

• Chord - A chord is any line segment joining two points on the circumference of a circle.

• Perpendicular - Two lines are perpendicular if they meet at right angles.

• Equidistant - Points A and B are equidistant from a third point C if the distance AC is equal to the distance BC.