# Math quiz

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2018-02-12 15:07

## Section

formulas for circumference: 2πr or πdformulas for area of a circle: πr2

definition of an acute angle: An angle that measures less than 90 degrees

definition of an obtuse angle: An angle that measures wider than 90 degrees but less than 180 degrees

definition of a straight angle: An angle whose measure is 180 degrees

definition of a right angle: An angle whose measure is 90 degrees

definition of a complementary angle: Two angles whose measures add up to 90 degrees

definition of a supplementary angle: Two angles whose measures have a sum of 180 degrees

definition of a vertical angle: The angles opposite each other when two angles intersect; also known as congruent angles

definition of an adjacent angle: Two angles that share a common side and have the same vertex