A door moves around a hinge. The hinge is its fixed point, allowing it to swing open and close. Other examples of hinge-based movement are windows, cupboard doors and gates. Thus, the correct answer is (a) Door.
class 5 Maths-Mela Mathematics Textbook Chapter 3 Angles as Turns question answer
CBSE Class 5 Maths-Mela Chapter 3 Angles as Turns solutions
A hinge is a fixed joint that allows objects to swing or rotate. Among the given options, only a door moves around a hinge. Doors open and close by rotating on hinges attached to the frame. In contrast, taps turn on threads, scissors rotate around a screw and wheels rotate around an axle. Hence, the correct answer is (a) Door, because its turning motion depends entirely on hinges.
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