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Convergence articles

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Show that the curves x2 - y2 = a2 and 2 xy = b2 cross at right angles.
In a given square, inscribe 4 equal circles so that...
Howard Eves' sixth edition is still worth considering for a textbook.
Find the isoceles triangle of smallest area that circumscribes a circle of radius 1.
Find two number with sum 20 and when squared their sum is 208.
If an equilateral triangle whose area is equal to 10,000 square feet be surrounded by a walk of uniform width, and equal to the area of the inscribed circle, what is the width of the walk?
This textbook seamlessly combines the history of non-Euclidean geometry with the mathematical ideas.
A biography of the 18th century author of an early calculus text, with some translations from the text.
The beginnings of land measurement in the early United States and how this affected American democracy.
A lively description of ten of the greatest feuds in mathematics.