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

• Theorem - A theorem is a statement that can be proved using known mathematical facts and reasoning.

• Subtended - An angle can be subtended by a line segment or curve. The legs of the subtended angle meet the endpoints of the line segment or curve.

• Segment - Two segments are created when dividing a circle into two parts using a chord.

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