What are Acute, Obtuse, Right, and Straight Angles?

Angles are identified by the measurement of their angles. Well, that would make sense. The instructor illustrates four different angles and their names by identifying their degrees. Zero to less than 90 degrees is an acute angle, while more than 90 but less than 180 degrees is an obtuse angle. Want to know what the other two are? Then watch this video.

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