education/math/MATH1060 (trig)/Angles.md

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-# Definitions
-| Term     | Description                                                                                                                                                                                                                              |
-| -------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
-| Ray      | Directed line segment consisting of an endpoint and a direction. Notated as $\overrightarrow{EF}$, where $E$ denotes the endpoint and $F$ denotes a point along the ray.                                                                 |
-| Angle    | Union of two rays with a common endpoint. Notated as $\angle DEF$ or $\angle FED$, where $D$ and $F$ are along the points of each ray, and $E$ is the vertex. $\angle EFD$ is not valid notation, because the vertex must be the middle. |
-| $\theta$ | A lowercase theta is used to represent a (non right) angle in a triangle                                                                                                                                                                 |
-| $\phi$   | A lowercase phi is used to represent another unknown angle in a triangle. As an example, in an algebraic equation, $x$ might be used to represent the first unknown and $y$ the second. In trig, $\theta$ would                          |