Question

trong cac khang dinh sau cai nao dung cai nao sai

a) neu 2 tia OA,OB doi nhau thi 3 diemA,O,B thanh hang

b)neu 2 tia OA,OB doi nhau thi diem O nam giua 2 diem AQ va B

c) neu 2 tia OA,OB doi nhau thi 2 diem A,O nam cung phia doi voi diem B

d) neu 2 tia OA,OB doi nhau thi hai diem A,B nam khacx phia doi voi diem O

Answer 1

theo mk thi

a,D

b.S( nam giua Ava B)

c,D

d,S 

theo mk thi nhu the

chúc bn hok tốt nha

Answer 2

thank