A door swings open through one third of a full turn. Through how many degrees has it turned?
A90°
B120°
C60°
D180°
Answer & Solution
Correct answer: B. 120°
A full turn is 360°, and one third of 360° is 120°.
Keep practising Lines and Angles
Browse all Lines and Angles questions for Olympiad (Class 7), or explore more Mathematics topics.
Related questions
A line cuts across two other lines at two different points. What is this line called?Two angles share a vertex and an arm, with no common interior. They are called?How many pairs of corresponding angles does a transversal make with two lines?Two parallel lines are cut by a transversal and a pair of consecutive interior angles are For any angle smaller than 90°, how much larger is its supplement than its complement?A triangle's exterior angle is 120° and the opposite interior angles are in the ratio 1 : A ray stands on a straight line making angles (x + 20)° and (2x - 5)°. What is the larger Lines AB and CD cross at O. Angle AOC is (2x + 10)° and angle BOD is (3x - 20)°. What is a