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| from a Latin word meaning to step down this is one of the 360 eqal steps to complete a circle. Therefore one degree will be 1/360 of a complete revolution. in other words in our Geometry there are 360 degrees in a complete rotation |
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| expressed in degrees as a fraction of a complete rotation of 360 degrees that emasure is designated for example by writing a lower case m in fromt of the angle symbol and reading it as the measure of angle_ _ _ |
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| a geometric tool used to find the meaure of an angle in degrees |
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| from the L meaning erect this is an angle with is 1/4 a compete rotation fo 360 degrees. that means that using a protractor we would find its measure ot be 90 degrees |
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| from a L word meaning sharp this si an angle whose measure is less than that of a right angle. it is greater than 0 degrees, but less than 90 degrees |
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| from L word meaning blunt this is an angle whose measure is greater than that of a right angle. formally in our geometry an angle is an obtuse angle if and only if it has a meausre greater than 90 degrees and less than 180 degrees |
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| from the L meaning one half this is a set of points that is literally 1/2 of a circle. from teh perspective of degree measure it is 1/2 of a complete rotation of 360 degrees. that emans that its measure is 180 degrees |
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| from a L word meaning to stretch this is an angle which is 1/2 of a complete rotation of 360 degrees. formally an angle is a straight anle if and onlly if its sides are opposite rays giving a measure fo 180 degrees |
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