What is an acute angle?, Less than 90°, Exactly 180°, More than 180°, Exactly 90°, What is a right angle?, Less than 90°, Exactly 180°, More than 180°, Exactly 90°, What is an obtuse angle?, More than 180°, Between 90° and 180°, Less than 90°, Exactly 90°, What is a straight angle?, More than 180°, Less than 90°, Exactly 180°, Exactly 90°, An angle of 45° is:, Straight, Right, Acute, Obtuse, An angle of 90° is:, Reflex, Right, Obtuse, Acute, An angle of 135° is:, Obtuse, Right, Acute, Straight, An angle of 180° is:, Acute, Right, Straight, Obtuse

Basic angles

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