To find the hypotenuse of a right-angled triangle, use the Pythagorean theorem. Square the base and the height. Add the two squares, and calculate the square root of the sum of the two squares. You need to know the base and the height of the triangle to complete this task.
Where did aluminum get its name? Aluminum got its name from Sir Humphry Davy, he named it after the Latin word Alumen meaning bitter taste . That is why the element Aluminum is symbolized as Al in when look â¦ ing at the periodic table of elements.
1 Date of discovery: unknown. 2  Origin of name: from the Anglo-Saxon word  iron  or  iren  (the origin of the symbol Fe comes from the Latin word  ferrum  meaning  iron 3  ). Possibly the word iron is derived from earlier words meaning holy metal because it was used to make the swords used in the Crusades..