Các câu hỏi tương tự
cho 2 diem A,, B thuoc 2 nua mat phang doi nhau bo la duong thang xy(A,Bko thuoc xy) Duong thang A, B cat xy tai M.
a,cho biet goc amy= 150 do. Hay tinh so do cac goc, gocamxva gocbmy.
b,tren tia mx lay mot diem o. Gia su gocaob=60do; goc aoy= 40 do.Tinh so do goc box
Cho ba diem A,B,C khong thang hang ve duong thang a cat cac doan thang AB,AC va khong di qua A,B,C
a) goi ten hai nua mat phang doi nhau bo a
b) doan thang BC co cat duong thang a khong
Cho goc AOB va goc BOC ke bu biet goc BOC = 5. goc AOB
a) Tinh goc AOB va goc BOC.
b) Goi OD la tia phan giac goc BOC. Tinh goc AOD.
c) Tren cung nua mat phang bo la duong thang AC chua tia OB va OD ve them 100 tia nua. Hoi ten hinh ve co bao nhieu goc?
Tren duong thang AA lay diem O . tren mot nua mat phang bo AA vi tia OB , tren nua mat phang con lai ve OC sao cho AOB =AOC=150
a)Tinh BOC ?
b)Tia OA co phai la tia phan giac cua goc BOC ko ? vi sao ?
cho diem O tren duong thang xy trong mot nua mat phang voi bo la xy ve goc vuong zOt va tia Ov trong goc vuong do sao cho zOv=xOz chung minh ot la tia phan giac cua goc voy
cho 2 goc ke bu goc AOB va goc BOC .Trong do goc AOB = 3 BOC
a) Tinh goc BOC
b) Tren nua mat phang bo AC co chua OB .Ve tia OD sao cho goc AOD = BOC .Hoi tia OB co la tia phan giac cua goc COD khong
cho 2 goc ke bu AOB va AOC . Biet AOB = 124 . a)tinh so do goc AOB. b)tren cung 1 nua mat phang bo BC chua tia OA ve COD = 118. tia OD co la tia phan giac cua goc AOB khong ?vi sao?
Cho goc bet xOy. Tren cung mot nua mat phang co bo xy , ve cac tia Oz va Ot sao cho goc xOz=70 do ; yOt=55 do
a, Chung to tia Oz nam giua hai tia Ox va Ot
b, Chung to tia Ot la tia phan giac cua goc yOz
Cho goc bet xOy. Tren cung mot nua mat phang co bo xy , ve cac tia Oz va Ot sao cho goc xOz=70 do ; yOt=55 do
a, Chung to tia Oz nam giua hai tia Ox va Ot
b, Chung to tia Ot la tia phan giac cua goc yOz