cho 3 diem M N P theo thu tu do nam tren duong thang xy hoi so doan thang co trong hinh ve la bao nhieu
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cho 3 diem M N P theo thu tu do nam tren duong thang xy hoi so cap tia doi nhau co trong hinh ve la
cho 3 diem M N P theo thu tu do nam tren duong thang xy so doan thang ci tren hinh ve la so cap tia doi nhau co tren hinh ve la
Cho doan thang d . Ve them 4 diem M,N ,P,Q theo thu tu ay . Ve diem A khong nam tren duong thang d.
a) Ve tia AM, tia QA
b)Ve duong thang AN va duong thang AP.
c) hinh tren co bao nhieu doan thang?
Cho cac diem A va B thuoc duong thang a,diem C nam giua A va B.diem D nam giua C va B.cau hoi;a,tim tren hinh ve cac tia doi nhau goc C.b,dung lap luan chung to C nam giua A va B.c,tren hinh ve co bao nhieu doan thang?la nhung doan thang nao
tren duong thang xy cho m diem phan biet. hoi co bao nhieu tia tren hinh ve
Cho 20 diem trong do khong co 3 diem nao cung nam tren 1 duong thang hoi co the ve duoc bao nhieu hinh tam giac 3 trong 20 diem da cho lam dinh
1. Tren 1 duong thang xy lay 4 diem phan biet A,B,C,D hay chi ra cac tia doi nhau
2. cho 10 diem trong do khong co ba diem thang hang . Cu qua hai diem ta ve duoc 1 duong thang . Hoi co tat ca bao nhieu duong thang?
3. cho n diem trong do khong co ba diem nao thang hang . Cu qua hai diem trong so cac diem do ve duoc 1 duong thang. Biet rang co 435 duong thang tao thanh .Tim n?
cho 3 diem A,B,C khong thang hang
a)Ve duong thang AB, doan thang BC,tia AC.Lay dien M tren duong thang AB sao cho B,M nam cung phia so voi diem A
b)Ve tia Ax la tia doi cua tia AC.Lay diem N sao cho A la trung diem cua doan CN(ve tren cung 1 hinh)
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cho duong thang xy va diem O nam tren duong thang xy tren tia Ox lay diem E sao cho OE=3cm.tren tia Oy lay diem G sao cho EG=6cm a)tren 3 diem O,E,G thi diem nao nam giua hai diem con lai ? vi sao b) tinh do dai doan thang OG. tu do cho biet diem O co la trung diem cua doan thang EG khong?