cho ba diem v,a,t thang hang . diem nao nam giua hai diem con lai neu:
tv + va=ta
bai 1 : cho 3 diem V, A , T thang hang . diem nao nam giua 2 diem con lai neu :
TV + VA = TA
bai 2 : tren 1 duong thang , hay ve 3 diem V , A , T sao cho TA = 1 cm , VA = 3 cm . hoi diem nao nam giua 2 diem con lai
Cho 3 diem V,A,T thang hang . Diem nao nam giua hai diem con lai neu :
TV + VA =TA
Tren mot duong thang , hay ve 3 diem V,A,T sao cho TA =1 cm , VA =2 cm , VT= 3 cm . Hoi diem nao nam giua hai diem con lai ?
chao toi la lam lop 62 mong ban tra loi cau hoi nay
Cho ba diem U,V,T sao cho TU=1cm ,VU=5cm ,VT=3cm.Khi do:
A.Diem u nam giua hai diem T va V
B.Diem t nam giua hai diem U va V
C.Diem V nam giua hai diem U va T
D.trong ba diem U,V,T khong co diem nao nam giua hai diem con lai
D vi o co 2 diem nao cong lai bang diem kia
sai vi diem u nam giua hai t va v
sai neu u nam giua t va v thi tu+uv=tv
nen 1+3=5(sai)
vay o diem nao nam giua diem nao
cho ba diem C,D,E thang hang,biet CD=2,5cm,DE=8cm,CE=5,5cm.hoi trong ba diem C,D,E diem nao nam giua hai diem con lai
Vì điểm E nằm giữa 2 điểm D và C nên ta có
8 - 5,5 = DC hay DC = 3,5
Trong điểm D,C,E thì điểm C nằm giữa 2 điểm D và E
Cau 5: Trong cac khang dinh sau, khang dinh nao dung, khang dinh nao sai?
1.Ba diem phan biet la ba diem thang hang.
2.Voi ba diem phan biet luon co hai diem nam ve cung phia doi voi diem con lai.
3.Voi ba diem thang hang phan biet luon co hai diem nam khac phia voi diem con lai.
4.Voi ba diem A,B,C thang hang thi diem B luon nam giua hai diem A,C.
5.Co mot va chi mot duong thang di qua hai diem (phan biet) cho truoc.
6.Hai duong thang phan biet thi song song voi nhau.
7.Hai tia chung goc thi cung nam tren mot duong thang.
8.Hai tia chung goc thi doi nhau
9.Neu diem M nam giua diem A,B thi no la trung diem cua doan thang AB.
10.Neu MA=MB thi M la trung diem cua doan thang AB.
11.Neu MA+MB= AB va MA=MB thi M la trung diem cua doan thang AB.
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cho 3 diem thang hang c,d,e hoi hai diem nao nam giua 2 diem con lai neu cd+ce=de
d nằm giữa hai điểm còn lại k mình nhé
Điểm C nằm giữa 2 điểm còn lại
k nha^_^
Kt bn nha t_t
trên tia ox lay hai diem m va n sao cho om = 3,5cm va on=7cm
a trong ba diem o m n thi diem nao nam giua hai diem con lai
b tinh do dai doan thang mn
cau 18 cho hai tia Ax va Ay doi nhau.lay diem M tren tia Ax,diem N tren tia Ay ta co:
a, diem m nam giua a va n
b,diem a nam giua m va n
c, diem n nam giua a va m
d,khong co diem nao nam giua hai diem con lai
câu hỏi đâu bạn ?
câu trl là b nhé bn :D
cách làm : ta có MA+AN=AM
mà M;A;N Cùng nằm trên đoạn thẳng MN
=>A nằm giữa M và N
=>đpcm