ACUTE ANGLE - LESS THAN 90 DEGREE, RIGHT ANGLE - EXACT 90 DEGREE, OBTUSE ANGLE - GREATER THAN 90 DEGREE AND LESS THAN 180 DEGREE, STRAIGHHT ANGLE - EXACT 180 DEGREE, REFLEX ANGLE  - GREATER THAN 180 DEGREE, FULL ROTATION  - EXACT 360 DEGREE,

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