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postavka zadataka u pdf formatu - 663KB - Alas

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873. Ako su a 6 , b 5 , b 10 bilo stranice pravilnog šestougla, pravilnog zvezdastogpetougla i pravilnog zvezdastog desetougla koji su upisani u isti krug k, dokazatida jea 2 6 + b 2 10 = b 2 5.874. Ako su a 3 , a 10 , b 10 bilo stranice pravilnog trougla, pravilnog konveksnog desetouglai pravilnog zvezdastog desetougla koji su upisani u isti krug k, dokazatida jea 2 10 + b 2 10 = a 2 3.92

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