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abdominguez8077
abdominguez8077
05.10.2019 • 
Mathematics

Which biconditional is not a good definition?

a.) an angle is a right angle if and only if its measure is 90 degrees.
b.) an angle is acute if and only if is between 0 and 90 degrees.
c.) two angles are congruent if and only if their measures are the same.
d.) an angle is obtuse if and only if its measure is greater than 180 degrees.

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