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Who is the mysterious person i...

Who is the mysterious person in the picture?

Correct answers: 41

The first user who solved this task is On On Lunarbasil.

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A mother is cleaning her teena...

A mother is cleaning her teenage daughter's room when she finds a bondage magazine hidden under the bed. She shows it to her husband and asks him what he thinks they should do.
After flicking through the magazine her husband says, "To be honest I'm not sure, but I don't think spanking her is going to help."

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Jakob Steiner

Born 18 Mar 1796; died 1 Apr 1863 at age 67.Swiss mathematician who was one of the greatest, contributors to projective geometry. He discovered the Steiner surface which has a double infinity of conic sections on it. The Steiner theorem states that the two pencils by which a conic is projected from two of its points are projectively related. He is also known for the Poncelet-Steiner theorem which shows that only one given circle and a straight edge are required for Euclidean constructions. His work included conic sections and surfaces, the theory of second-degree surfaces and centre-of-gravity problems. He developed the principle of symmetrization (1840-41). In 1848 he ws the first to define various polar curves with respect to a given curve, and introduced the “Steiner Curves.”«

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