Help from a mathematician needed for 26A. Geometric 4-sided shape with no sides parallel (9) T?A?E?Z?O?D. Trapezoid fits but that is defined as having 2 sided parallel! A trapezium has no sides parallel but the required answer has to finish with a 'D' from WadebriDge for 14D. Any ideas?
(geometry, US, four-sided polygon with no sides parallel and no equal sides): The terms trapezium and trapezoid have swapped meanings in the US and Canada as compared with the rest of the world. The British etc. usage is older; the American usage is traceable to the two entries having been accidentally exchanged in Charles Hutton's Mathematical and...
(geometry, US, four-sided polygon with no sides parallel and no equal sides): The terms trapezium and trapezoid have swapped meanings in the US and Canada as compared with the rest of the world. The British etc. usage is older; the American usage is traceable to the two entries having been accidentally exchanged in Charles Hutton's Mathematical and Philosophical Dictionary of 1795.
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