There are different patterns in different circumstances: for example when two (or more) parallel lines are intersected by one (or more) transversals; or when considering the interior or exterior angles of polygons.
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if an angle measures 30 then it is acute
the measures of each angle in a dodecogon is 360
An angle that measures 180 degrees would be in a straight line. Therefore, this angle is known as a straight angle.
An angle that measures to precisely 90o is called a right angle.
If it measures 90 degrees, then it is called a right angle.