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Convergence articles

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A collection of original texts to help students learn some important areas of mathematics.
A study of Mullikan's Nautilus, using movies to illustrate the important ideas
If 40 oranges are worth 60 apples, and 75 apples are worth 7 dozen peaches, and 100 peaches are worth 1 box of grapes and three boxes of grapes are worth 40 pounds of pecans, how many peaches can be bought for 100 oranges?
Three hundred pigs are to be prepared for a feast.
Three equal circumferences with radii 6" are tangent to each other. Compute the area enclosed between them.
Having been given the perimeter and perpendicular of a right angled triangle, it is required to find the triangle.
Page 5 of Paul Halmos Photograph Collection: Paul Bateman, Felice Bateman, Edward Begle, Alexandra Bellow, William Johnson, Georgia Benkart, Lipman Bers
A set of four congruent circles whose centers form a square is inscribed in a right triangle ABC where C is the right angle and serves as one corner of the square. Find their radius in terms of the sides; a,b,c, of the triangle.
This is the title page of the geometry book of Jacob Kobel (1460 - 1533). The book dealt primarily with measurement, showing its readers how to use various instruments to measure fields, determine heights of buildings, and perform various other necessary tasks.
The history of the Poincare conjecture up to its recent proof by Grigori Perelman.