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Convergence articles

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Three men have a pile of money, their shares being 1/2, 1/3 and 1/6. Each man takes some money from the pile until nothing is left.
You have two sums of money, the difference of which is 2 dirhams; you divide the smaller sum by the larger and the quotient is equal to 1/2. What are the two sums of money?
Tartaglia's method for solving cubics, which he eventually explained to Cardano.
Having been given the perimeter and perpendicular of a right angled triangle, it is required to find the triangle.

Nine examples of using history in the mathematics classroom -- for those who read French!

Given two circle tangent at the point P with parallel diameters AB, CD, prove that APD and BPC are straight lines.
Four episodes in the history of geometry are discussed, where dynamic geometry helps in understanding the ideas.
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.
A collection of original texts to help students learn some important areas of mathematics.
Make a crown of gold copper, tin, and iron weighing 60 minae: gold and copper shall be 2/3 of it; gold and tin, 3/4 of it; and gold and iron, 3/5 of it. Find the required weights of gold, copper, tin, and iron.

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