Các câu hỏi tương tự
bai 1: tren mot nua mat phang bo chua tia Oa ve tia Ob sao cho goc AOB=35 do va tia Oc sao cho goc AOC= 70 do
a, tia Ob co phai la tia phan giac cua goc AOC khong? vi sao?
b, ve tia OB` la tia doi cua tia OB. tinh so do goc ke bu voi goc AOB
tren nua mat phang bo chua tia Oa ,ve hsi tia Ob va Oc sao cho goc aOb =150 do ,goc aOc =90 do .Om la tia pham giac cua goc aOc
On la tia phan giac cua goc bOc
a) chung to rang Oc nam giua Oa,Ob
b) tinh so do cac goc bOc=?,aOm=?,aOn=?,mOn=?
Tren cung mot nua mat phang bo la duong thang chua tia Ox ,ve hai tia Oa va Ob sao cho goc xOa =68°va goc xOb =136°
1/ trong ba tia Ox, Oa, Ob tia nao nam giua hai tia con lai ? Vi sao?
2/ tinh so do goc AOB
3/ tia Oa co la tia fan giac cua goc xOb ko ? Vi sao?
4/ ve tia Oy la tia doi cua tia Ox .tinh so do goc yOb
Cho tia OB. Tren hai nua mat phang doi nhau bo chua OB. Ve hai tia OA va OC SAO CHO goc AOB = BOC = 25o. Ve tia OB' la tia doi cua tia OB. Trong hai tia OB va OB' tia nao la tia phan giac cua goc AOC? Vi sao?
tren cung mot nua mat phang bo chua tia Ox, ve 2 tia Oa va Ob sao cho xOa = 63*, xOb = 126*. a) trong ba tia Ox, Oa, Ob tia nao nam giua 2 hai tia con lai. b) tinh aOb c) tia Oa co phai tia phan giac cua xOb khong ?. d) ve tia Om la tia doi cua tia Ob. Tinh xOm.
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 3 duong thang a,b,c cung di qua diem o sao cho tia ob va tia oc cung nam trong nua mat phang bo a. goi tia oa' va oc' lan luot la tia doi cua tia oa vs oc. biet goc aoc= 80 do,boa'= 50 do
a tinh so do goc boc'
b tia ob co la tia phan giac cua coa' khong vi sao
Cho AOB=60 do Va OC LA to a plan giac CuA AOB going OD la tia doi Cua tia OC. Chung to rang BOD=AOD.tren Cung mot Nua mat phang Bo chua tia OD khong chua tia OA sao cho DOE=120 do. Chung to tia OB LA tia phan giac Cua COE. Lam nhanh hộ mình nha mình đang cần gấp
Tren cung mot mat phang co bo chua tia Oa , ve hai tia Ob va Oc sao cho goc aOb=65 do , goc aOc = 130 do.
Ve tia Ot la tia doi cua tia phan giac Ob , so sanh goc aOt va cOt
Giup minh voi !!!