The "inverted arch" is used when a sideways, or inward load, is
to be resisted.
The "common arch" supports a vertical load.
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One is the "Gateway To The West" arch in St. Louis, Missouri. It
is also possible McDonalds Restaurants have a double inverted
catenary arch shape. It resembles a letter M in script form.
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A basihyal is either of two small bones which form the body of
the inverted hyoid arch.