A dining table plays host to all kinds of gatherings and day-to-day living. If they could talk, each one would have its own unique story to tell! But one thing most tables have in common is that they come in standard table sizes — and for good reason. Floor plans and dinnerware and tablecloths are all designed with these standard table sizes in mind. With the right size table, everyone has enough space to butter their dinner roll comfortably, and not so much that they need to shout to the person across the table.
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Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. It only takes a minute to sign up. Connect and share knowledge within a single location that is structured and easy to search. Just to be completely clear, by height I mean if you placed the shape on a table, how high up would the highest point be from the table? The first thing you need to do is to note that the apex of a regular tetrahedron lies directly above the center of the bottom triangular face. Thus, find the length of the segment connecting the center of an equilateral triangle with unit length to a corner, and use the Pythagorean theorem with the length of an edge as the hypotenuse, and the length you previously derived as one leg. The height you need is the other leg of the implied right triangle.
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Art of the Americas. Ancient art refers to the many types of art produced by the advanced cultures of ancient societies with some form of writing, such as those of ancient China , India , Mesopotamia , Persia , Palestine , Egypt , Greece , and Rome. The art of pre-literate societies is normally referred to as Prehistoric art and is not covered here.
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