# alternate

Alternate is a term used in mathematics in several different ways.
(1) Alternate angles are angles on opposite
sides and opposite ends of a line that cuts two parallel lines. (2) A well-known
theorem called the **alternate segment theorem** involves the
segment on the opposite side of a given chord of a circle. (3) An **alternate hypothesis** in statistics is the alternative offered to the null
hypothesis. (4) To alternate is to cycle backwards and forwards between
two different values: e.g. 0, 1, 0, 1, 0, 1 ...