What is the common point where two arms of an angle meet?, Ray, Vertex, Line, Degree, Which angle is exactly 90°?, Acute angle, Obtuse angle, Right angle, Straight angle, An angle measures 45°. What type of angle is it?, Acute angle, Right angle, Obtuse angle, Straight angle, Which angle is greater than 90° but less than 180°?, Acute angle, Right angle, Obtuse angle, Straight, What is the size of a straight angle?, 45°, 90°, 180°, 360°

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