1. Aylana ichiga 12 burchak chizing va uni burchak o’lchamlarini qo’yib chizing. Teng yonli uchburchaklar yasang

Variant-17
1.Aylana ichiga 12 burchak chizing va uni burchak o’lchamlarini qo’yib chizing.Teng yonli uchburchaklar yasang.
2.Asosi to’g’ri burchakli uchburchak bo’lgan a=12 cm, c= 13 cm , m=66,5 cm , h=66,2 cm bo’lgan piramida chizib uni perimetri , asosi yuzasi,yon sirti yuzi va hajmini toping.
3.O’tmas burchakni 135⁰ qilib chizing va undan bessektirisa chiqarib o’tkir burchak chizib o’lchamlarini qo’ying.
Variant-18
1.Paralillogram chizing va uning ichki va tashqi burchak ko’rsatgichlarini tenglama tuzib qo’ying.
2.Asosi muntazam beshburchak bo’lgan piramida chizing a=15,6 cm , m=47 cm , h=46 cm, r=14,8 cm bo’lsa piramida asosini ,yuzini,yon sirti yuzini va hajmini toping.
3.Aylanaga ichki chizilgan sakkiz burchak chizib undan uchburchaklar yasang va o’lchamlarini qo’ying.

Variant-19

1.Parallilogram chizing uni ichki va tashqi burchaklarini qo’yib a=9,2 cm , h=6,4 cm bo’lsa uning yuzini toping.
2.Konus chizing uni asosidagi aylana radiusi 26,4 cm va balandligi h=72,4 cm, bo’lsa konusni asosi uzunligi,yon sirtini yuzi va hajmini toping.
3.Shar chizing radiusi 22,4 cm bo’lsa uni yuzi va hajmini toping.
Variant-20
1.Qirrasi 16,4 cm bo’lgan ko’bni chizing,Kub sirtini yuzi va hajmini toping.
2.Asosini radiusi 14,6 cm bo’lgan silindir chizing balandligi h=56,4 cm bo’lsa uni yon sirtining yuzi va hajmini toping.
3.Uchburchak chizing va uning ichki va tashqi burchak o’lchamlarini qo’ying tenglama asosida.