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Leonard and Thomas Digges applied mathematics to the science of war, including, as illustrated here, for troop formation.

Images from <em>De revolutionibus,</em> the book of Nicolaus Copernicus in which he presented his heliocentric theory, arguing that the planets, including the Earth, rotated about the Sun

Collection (from 1614) of Roger Bacon's 13th century writings on applications of mathematics

Beautifully illustrated practical mathematics manuscript designed to impress King James I

Given a semicircle, Prove that if O is the circle's center, DO=OE.
A biography stressing Agnesi's deep commitment to help those in need.
The radius of a circle is 3.20 meters. Compute to within .001m the areas of the inscribed and circumscribed equilateral triangles.
There is a mound of earth in the shape of a frustum of a cone.

A detailed study of the cycles of the Mayan calendar, along with some other ancient calendars.

Find the area of the elliptical segment cut off parallel to the shorter axis;