HONG KONG, Feb. 19, 2018 /PRNewswire/ -- Euclidea v4.0, the geometric puzzle app that's already made a big splash on Apple devices, is now available for Android. This version of the popular app ...
A COLLECTION of simple geometrical constructions without proofs, which is said to represent the minimum knowledge of the subject required of candidates in the Oxford and Cambridge School Examinations, ...
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