Two students who discovered a seemingly impossible proof to the Pythagorean theorem in 2022 have wowed the math community ...

The sum of interior angles in a quadrilateral is 360°. This fact is a more specific example of the equation for calculating the sum of the interior angles of a polygon: \(\text {Sum of interior ...

have three sides, therefore they have three angles. Interior angles in a triangle sum to a half turn (180˚). Quadrilaterals close quadrilateralA polygon with four straight sides. have four sides ...

Two teenage math stars have developed five new proofs of the Pythagorean theorem, one of mathematics' most fundamental ...

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. What is a quadrilateral? A quadrilateral is a four-sided shape where each of the sides are straight ...

It’s been 10 years since VanderMeer dropped readers into Area X, a warped version of America’s southern coast mangled in time ...

T he first time I set puzzles for readers was in April 1993, launching a column that was called Problematics (what else?) in a newspaper in my hometown, but my collection of puzzl ...

While Beijing initially dismissed the notion of the Quad, it now sees the grouping as a formidable force to reckon with in the coming years.

Investopedia / Ryan Oakley A lump-sum payment is a monetary sum paid in one single payment instead of allocated into installments. Lump sums are commonly associated with pension plans and other ...

An explosion in an Athens apartment resulted in the death of a man and serious injury to a woman. Greek anti-terrorism police are investigating the incident, suspecting an explosive device caused ...

But this dialogue would not just be unidirectional. A quadrilateral dialogue to share best practices and lessons learned would provide positive-sum benefits to all four countries. Capitalising on all ...

The new Coast Guard cooperation among the U.S., Australia, India, and Japan is a crucial step in building a resilient and unified front in the Indo-Pacific. The Philippines is not replacing ...