பொருள் : A quarter of the circumference of a circle.
ஒத்த சொற்கள் : quarter-circle
பொருள் : Any of the four areas into which a plane is divided by two orthogonal coordinate axes.
பொருள் : The area enclosed by two perpendicular radii of a circle.
பொருள் : A measuring instrument for measuring altitude of heavenly bodies.