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α+β=180
α-β=36
----------- +
2α=216 /:2
α=108
β=72
Odp. B
22.
Suma katow (n-2)*180
(5-2)*180=540 stopni
α+α+2α+α+40+5α-50=540
10α=540+10
10α=550 /:10
α=55 stopni
Odp. C