Ha ha tricked ya you'll just have to ask a teacher because its hard to explain and i think you mean protractor not porfactor.
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With trigonometry by using the cosine rule
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.