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If in a circle ABDC, circumscribe an equilateral triangle ABC; the straight line AD is equal to the sum of the two straight lines BD and DC: required a demonstration.
A new sourcebook containing the works in their original form along with a translation and a brief commentary.
On a day in spring a boy has gathered cherry blossoms under a cherry tree. Nearby a poet is reading some of his poems aloud. As he reads, the boy counts out the cherry blossoms, one blossom for each word of a poem.
There is a tree with 100 branches. How many nests, eggs and birds are there?
A history of algebra from its early beginnings to the twentieth century.
If 12 cattle eat up 3 1/3 acres of meadow in 4 weeks and 21 cattle eat up 10 acres of exactly similar meadow in 9 weeks, how many cattle shall eat up 36 acres in 18 weeks? (Hint: The grass continues to grow.)
Given four integers where if added together three at a time their sums are: 20, 22, 24, and 27. What are the integers?
A square circumscribed about a given circle is double in area to a square inscribed in the same circle. True of false? Prove your answer.
Instructions that apply to Convergence but not necessarily to other areas of Loci
Two excellent volumes on Euler in honor of his three hundredth birthday