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Go Math Chapter 11
Term | Definition |
---|---|
clockwise | in the same direction in which the hands of a clock move |
counterclockwise | in the opposite direction in which the hands of a clock move |
degree (°) | the unit used for measuring angles |
protractor | a tool used for measuring the size on an angle |
acute angle | an angle that measures greater than 0° and less than 90° |
obtuse angle | an angle that measures greater than 90° and less than 180° |
ray | a part of a line; it has one endpoint and continues without end in one direction |
right angle | an angle that forms a square corner and has a measure of 90 degrees (90°) |
vertex | the point at which two rays on an angle meet or two (or more) line segments meet in a two |