acute angle , An angle whose measure is less than 90 degrees. , obtuse angle , An angle whose measure is more than 90 degrees., right angle , An angle whose measure is exactly 90 degrees., angle, A figure formed by joining two rays. , parallel lines , Two lines that never meet. , perpendicular lines , Two lines that form four right angles. , protractor, An instrument used to measure angles. , straight angle , An angle whose measure is 180 degrees., revolution angle , An angle whose measure is 360 degrees., reflex angle , An angle whose measure is more than 180 degrees., degrees, The measure for angles. .

Angles - Match Up

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