cho 19 duong thang phan biet dong quy tai diem O;19 duong thang do tao ra so goc co dinh O khac goc bet la bao nhieu
Cho 15 diem trong do khong co 3 diem nao thang hang. Hoi co the ve duoc tat ca bao nhieu duong thang di qua 2 trong 15 diem da cho?
tren duong thang xy lay diem O, ve them hai tia Om va On . co tat ca bao nhieu goc? la nhung goc nao? trong do co goc bet khong?
giup minh voi! ai giup duoc cho 10 tk lien!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
cho 30 duong thuong doi mot cat nhau. Neu trong 30 duong thang do co dung 6 dt dong quy thi co tat ca bao nhieu giao diem
co 10 duong thang dong quy tai o .co bao nhieu goc o dinh o duoc tao thanh
co tat ca 25duong thang ko co 3 diem nao thang hang
a qua 2 duong thang lai ve duoc 1 duong .hoi co tat ca bao nhieu duong ?
b qua 5 diem ve duoc 5 duong hoi co tat ca bao nhieu duong?
https://hoc24.vn/cau-hoi/cho-ba-duong-thang-hinh-ben-cmr-trong-6-goc-ton-tai-it-nhat-1-goc-lon-hon-hoac-bang-60o-o-1-2-3-4-5-6.1284343715156
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co 3 duong thang dong quy tai 1 diem o?co bao nhieu goc tao hinh trong hinh ve
7 duong thang trong do co 2 duong thang bat ki nao cung cat nhau. Hoi co it nhat bao nhieu giao diem nhieu nhat bao nhieu giao diem