| Squaring the circle is one of the three great problems of Classical Geometry, along with the trisection of the angle and the duplication of the cube. |
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| Medieval literature is full of propositions to trace the angle trisection and the heptagon. |
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| Award-winning architects Arch-Deco designed an elegant yet innovative building, following the trisection principles of classical architecture. |
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| He also discussed parabolas, angle trisection and magic squares. |
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| Because of confusion with national flags, the design was changed in July 1946 to trisection horizontally with, from top to bottom, dark blue, yellow and red. |
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| Several geometers of Plato's time tried their hands at trisection. |
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| His world at this juncture is a trisection of baseball, science and flight. |
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| Each subject was transferred to a trisection therapy table and placed in a supine position. |
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| It is not known whether the second celebrated problem of archaic Greek geometry, the trisection of any given angle, arose from the difficulty of the decan, but it is likely that it came from some problem in angular measure. |
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| A compass and straight edge construction trisection of a general angle is impossible, proved algebraically by Wantzell in the 19th century. |
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| The trick for trisection is an application of what the Greeks called neusis, a maneuvering of a measured length into a special position to complete a geometrical figure. |
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