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Geometry 2

Angle The space (usually measured in degrees) between two intersecting lines or surfaces at or close to the point where they meet.
Vertex/Vertices Each angular point of a polygon, polyhedron, or other figure.
Protractor An instrument for measuring angles, typically in the form of a flat semicircle marked with degrees along the curved edge.
Acute Angle Any angle under 90º.
Right angle An angle at exactly 90º
Obtuse angle Any angle over 90º
Straight Angle an angle of 180°.
Created by: 17nglawe