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V

vic02

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V

vic02

ah` dc roi`!ờ lấy compa quay tâm O sao cho cắt Ox,Oy! Tại 2 cái điểm cắt đó dung f thước kẻ nối 2 đường vào! Sẵn co thước chia nó làm 3 phần! :|
 
O

oack

sao lại chia thành 3 phần bằng nhau vậy bạn , bạn xem lại xem hay là chia thành 3 góc bằng nhau ý chớ
 
N

nguyennhanhoa

theo minh bai nay khong co loi giai dau!
boi vi goc o xy theo de bai la goc bat ki.........
gia su nhu goc o xy la goc 180 thi tao co cach chia khac nhu cach tinh cung o lop 9.
gia su goc o xy la goc <180 do ta lai co cach chia khac nhau tuy tung goc.
neu xet goc o xy tren duong tron lai cang kho(nhung neu thuoc ma ban neu tren de bai la thuoc do do thi ok rui luon luon co loi giai ^^!) minh da doc nhieu sach toan ve viec dung hinh nhung minh chua ghe co the chia goc o xy bat ki thanh 3 phan bang nhau ca. neu chia duoc chi co the la 1 so goc dac biet nhu 90, 120, 180....! (^^). khong biet minh giai thich the co dung khong nhi.
 
N

nguyennhanhoa

theo minh bai nay khong co loi giai dau!
boi vi goc o xy theo de bai la goc bat ki.........
gia su nhu goc o xy la goc 180 thi tao co cach chia khac nhu cach tinh cung o lop 9.
gia su goc o xy la goc <180 do ta lai co cach chia khac nhau tuy tung goc.
neu xet goc o xy tren duong tron lai cang kho(nhung neu thuoc ma ban neu tren de bai la thuoc do do thi ok rui luon luon co loi giai ^^!) minh da doc nhieu sach toan ve viec dung hinh nhung minh chua ghe co the chia goc o xy bat ki thanh 3 phan bang nhau ca. neu chia duoc chi co the la 1 so goc dac biet nhu 90, 120, 180....! (^^). khong biet minh giai thich the co dung khong nhi.
 
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