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A reflex angle is an angle that is:

  • A.Less than 90°
  • B.Between 90° and 180°
  • C.Exactly 180°
  • D.Greater than 180° and less than 360°

Answer: D

A reflex angle is one that turns through more than a straight angle but less than a full turn:

\[ 180^{\circ} < \theta < 360^{\circ} \]

Below 90° an angle is acute, between 90° and 180° obtuse, and exactly 180° straight.

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