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a/tia 0t nằm giữa hai tia còn lại vì xot<xoy va ot nằm giữa ox và oy
b/tinh tia toy
xoy-xot = 600-300
c/tia ot là tia phân giác của goc x0y vì xot=toy va ot nam giữa õ va oy
Gọi số tổ được chia thành la a tổ
=> 195 ; 172 chia hết cho a
=> a thuộc UC(195;172)
a lớn nhất
=> a =UCLN(195;172)
192 =26.3 ; 172 =22.43
a =UCLN(192;172) = 22 =4
Vậy chia thành 4 tổ là nhiều nhất
co ai biet lam bai nay khong co the giup minh duoc khong minh dang gap do