👉 Przewalski's theorem is a mathematical result in geometry that states that a triangle can be inscribed inside a circle if and only if its three sides are all equal, and it is also known as the "principle of equal sides".
👉 Przewalski's theorem states that in a regular polygon, if the number of sides is odd, then there are more than two triangles formed by connecting pairs of vertices. This theorem can be proven for any polygon with an even number of sides, as it applies to all polygons.
👉 Przewalski's worm is a type of worm found in various parts of Europe, including Poland and Russia. This species is known for its ability to invade and colonize new environments, often causing significant damage or even death to their host animals.