Naughty Elves
13 Достижений
Steam
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Finish Level 5
Five is the third prime number. Because it can be written as 221 + 1, five is classified as a Fermat prime; therefore a regular polygon with 5 sides (a regular pentagon) is constructible with compass and unmarked straightedge.
Finish Level 10
10 is an even natural number following 9 and preceding 11. Ten is the base of the decimal numeral system, by far the most common system of denoting numbers in both spoken and written language.
Finish Level 15
15 (fifteen) is the natural number following 14 and preceding 16. In English, it is the smallest natural number with seven letters in its spelled name.
