Masala :
1. Muntazamo`nburchakningharbirichkiburchagini toping.
Yechish: n = 10
Javob: 1440
2. Bittaichkiburchagi 1560 gatengbo`lganmuntazamko`pburchaktomonlarisonini toping.
Yechish:
( n-2)* 1800 = 1560n
( 1800 – 1560) n = 3600
240n = 3600
Javob: n = 15
Teorema:
Muntazam n burchakningbittatashqiburchakgi gradusgateng.
Isbot:
Qo`shniburchaklaryig`indisi 1800 gatengligidan :
Masala
3.Muntazamto`qqizburchakningbittatashqiburchagini toping.
Yechish: n = 9
Javob: 400
4. Mustahkamlash.( 15 min)
1 Darslikdan № 3, № 4, № 6. o`quvchilartomonidandoskadabajarish.( 1 ball)
№ 3.
a) n= 3 , α - ?
Javob: 600
b) n = 18, α - ?
Javob: 1600
№ 4.
n = 6 tashqiburchagi - ?
Javob: 600
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