Angles for dummies. The word "angle" comes from the Latin word "\ (angulus\)" which means "corner," referring to the sharp point where two lines meet. In this case, you need to know either two angles and the side in between them (angle-side-angle, or ASA), or two angles and a consecutive side (angle-angle-side, or AAS). Learn geometry concepts, including angles, with interactive lessons and practice on Khan Academy. Four different types of angles are: central, inscribed, interior, and exterior. There are five types of angles: acute, right, obtuse, straight, and reflex. This Latin term is also related to the Germanic word for "hook," possibly due to the shape of the Angeln peninsula in Germany, from which the Angles tribe took its name. Here, you see examples of these different types of angles. We will also explore special types of angles. mathantics. An angle is formed when two rays are joined at their endpoints.
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