This document defines and describes different types of angles: a right angle is 90 degrees, an acute angle is less than 90 degrees, and an obtuse angle is more than 90 degrees. It also states that a straight line has 180 degrees and a full circle has 360 degrees.
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By:
Tathmainul Qulub 110210101068
Department of Mathematics Education
Faculty of Teacher and Training Education
University of Jember