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Three images from Kepler's 1609 Astronomia Nova, the text in which he introduced his first two laws of planetary motion

This meeting will take place at the MAA Carriage House in Washington, DC on April 19, 2008.
Determine the dimensions of the least isosceles triangle ACD that can circumscribe a given circle.
Given the dimensions of an isosceles trapezoid find the length of the transversal drawn parallel to the bases that divides the trapezoid into 2 equal areas.
A wooden log is encased in a wall. If we cut part of the wall away to a depth of 1 inch...
Suppose a lighthouse is built on the top of a rock; the distance between a place of observation and that part of the rock level with the eye is 620 yds.
A lively history of number systems and number theory from earliest times up to the notion of "infinity".
A study of the rise of English algebra from the Medieval period to the end of the seventeenth century.
The author compares Greek ladder, continued fraction, and Newton's Method approximations, noting that the Greek ladder easily gives both of Archimedes' famous bounds.
This is a description of the crosswalk from Convergence to Loci Convergence.