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.
In 1807, Davy proposed the name aluminium for the metal, undiscovered at that time, and later agreed to change it to aluminum. Shortly thereafter, the name aluminum was adopted to conform with the ium ending of most elements. Aluminium was also the accepted spelling in the U.S. until 1925, at which time the American Chemical Society decided to use the name aluminum thereafter in their publications. See the Wikipedia entry on Aluminium for additional discussion on the spelling of this element.