# Convergence articles

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A study of some elements of Greek geometry, as part of a course for liberal arts undergraduates on basic concepts of the calculus.
Page 11: Dantzig to Dieudonne
There are a number of wonderful mathematics websites that readers of Convergence should be aware of. We describe some of them here.
This is a page from an early printed edition of the Arithmetica of Jordanus de Nemore (early 13th century).
Given a semicircle, Prove that if O is the circle's center, DO=OE.
A man bought a number of sheep for $225; 10 of them having died, he sold 4/5 of the remainder for the same cost and received$150 for them. How many did he buy?
Relationships between Architecture and Mathematics
Three equal circumferences with radii 6" are tangent to each other. Compute the area enclosed between them.
An oblong garden is a half yard longer than it is wide and consists entirely of a gravel walk...
Suppose General [George] Washington had 800 men and was supplied with provisions to last 2 months but he needed to feed his army for 7 months.