When most people think of shapes, they imagine a triangle, a rectangle, or maybe even a fancier-sounding rhombus or trapezoid. But to mathematicians, shapes encompass a vast universe of surprising ...

Arc length is a fraction of circumference. Area of a sector is a fractions of the area of a circle. Both can be calculated using the angle at the centre and the diameter or radius. Practice circle ...

Since its resounding return to Netflix, the series "Squid Game" has fascinated audiences as much for its plot as for its mysterious symbols. Geometric shapes—circles, triangles, and squares—are ...