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View search results from all Wolfram sites (14595 matches)Take any triangle with polygon vertices A, B, and C. Pick a point A_1 on the side opposite A, and draw a line parallel to BC. Upon reaching the side AC at B_1, draw the line ...
An Andreini tessellation is a three-dimensional equivalent of a semiregular tessellation. There are 28 such tessellations.
A circle with an arrow indicating a direction.
K=-e^2, where e is the eccentricity of a conic section.
The star polygon {10/3}.
The star polygon {12/5}.
The product of three translations along the directed sides of a triangle through twice the lengths of these sides is the identity map.
Not concentric.
A 90-sided polygon.
A 19-sided polygon, sometimes also called the enneakaidecagon.
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