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Convergence articles

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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.
On a day in spring a boy has gathered cherry blossoms under a cherry tree. Nearby a poet is reading some of his poems aloud. As he reads, the boy counts out the cherry blossoms, one blossom for each word of a poem.
A lively history of number systems and number theory from earliest times up to the notion of "infinity".
A history of algebra from its early beginnings to the twentieth century.
A square walled city of unknown dimensions has four gates, one at the center of each side.
If 80 dollars worth of provisions will serve 20 men for 25 days, what number of men will the same amount of provisions serve for 10 days?
Essays on various aspects of Greek science and mathematics, which help give a context for those aspects of Greek culture.

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

Determine the dimensions of the least isosceles triangle ACD that can circumscribe a given circle.
A collection of 24 mini-posters, each containing a quotation about mathematics.