The Founding Fathers of the US included provisions for amending the Constitution so that it can adapt as American society changes. This group of men realized that America was going to constantly change. This is why in the preamble of the Constitution they included the fact that they were making the Constitution in order to form a "more perfect union." This phrasing indicates the the current laws they have are not perfect and that they may need to be changed later on. This is why the Founding Fathers made it so that the Senate and House of Representatives could make changes to the Constitution.
Geometric shapes help you work if you dont know what that thing is. lets say that the washing mashine is what i dont know. but i look at the shape, and the shape is the only thing i need to know.Then i founded out that it was a washing machine. people use shapes everywhere. they were here since the beginning of earth. the word shape came at 1800. from germanic, to old english. there 2 kind of shape in old english: gesceap and sceppan. Hope it helps!