- Hypotenuse (Wikipedia)
In geometry, a hypotenuse is the side of a right triangle opposite the right angle. It is the longest side of any such triangle; the two other shorter sides of such a triangle are called catheti or legs. The length of the hypotenuse can be found using the Pythagorean theorem, which states that the square of the length of the hypotenuse equals the sum of the squares of the lengths of the two legs. Mathematically, this can be written as 𝑎2 + 𝑏2 = 𝑐^2, where a is the length of one leg, b is the length of another leg, and c is the length of the hypotenuse.
- Adolph Menzel (Wikipedia)
Adolph Friedrich Erdmann von Menzel (8 December 1815 – 9 February 1905) was a German Realist artist noted for drawings, etchings, and paintings. Along with Caspar David Friedrich, he is considered one of the two most prominent German painters of the 19th century, and was the most successful artist of his era in Germany. First known as Adolph Menzel, he was knighted in 1898 and changed his name to Adolph von Menzel.