The problem of squaring the circle, namely constructing a square with the same area as a given circle using ruler and compasses alone, had been one of the classical problems of Greek mathematics.
Ang problema ng squaring ang bilog, namely constructing ng isang parisukat na may parehong lugar bilang isang binigay na bilog gamit ang reyna at compasses nag-iisa, had been isa ng ang pangunahin problema ng Greek matematika.