Ta có: \(\widehat{yOz}\)=\(\widehat{xOy}-\widehat{xOz}\)=80-30=60
Vì Om là tia phân giác của \(\widehat{yOz}\) => \(\widehat{zOm}=\widehat{mOy}\)\(\frac{yOz}{2}\)=\(\frac{60}{2}\)=30
Ta có: \(\widehat{xOm}=\widehat{xOz}+\widehat{zOm}=30+30=60\)
TREN CUNG MOT NUA MAT PHANG CO BO CHUA TIA Ox VE HAI GOC xOy,yOz KE BU NHAU SAO CHO GOC xOy=80 DO
A] TINH GOC yOz
B] GOI Om , On LA CAC TIA PHAN GIAC CUA GOC xOy VA GOC yOz . CHUNG TO GOC mOm LA GOC VUONG
C] TREN NUA MAT PHANG KO CHUA TIA Oy CO BO CHUA TIA Ox , VE TIA Oc SAO CHO GOC xOt=80 DO . TINH mOt
tren cung mot nua mat phang co bo chua tia ox , ve hai tia oy va oz sao cho goc xoy = 100,xoz = 20
a, tinhso do goc yoz
b,ve tia om la tia phan giac cua goc yoz.tinh so do goc xom
Cho 2 tia Oy, Oz cung nam tren mot nua mat phangco bo chua tia Ox. Biet goc xOy=30 do, goc xOz=80 do. Ve tia phan giac Om cua cua goc xOy. Ve tia phan giac On cua goc yOz. Tinh goc mOn
cho hai tia oy va oz cung nam tren mot nua mat phang co bo chua tia ox biet goc xoy =30do,goc xoz=120do
a,tinh so do goc yoz
b, ve tia phan giac om cua goc xoy, tia phan giac on cua goc xoz. tinh so do goc nom
cho hai tia oy, oz cung nam tren mot nua mat phang bo chua tia ox, biet goc xoy la 50 do, goc xoz la 100 do ve tia phan giac om cua goc xoy ve tia phan giac on cua goc xoz tinh mon
tren cung mot nua mat phang bo chua tia Ox,ve hai tia Oy,Oz sao cho goc xOy=80do,xOz=130do
a)Tinh so do goc yOz.
b)Ve tia Om la tia doi cua tia Ox.Tinh so do goc mOz.
c)Ve tia Ot la tia phan giac cua goc xOy.Hoi tia Oy co phai la tia phan giac cua goc zOt khong?Vi sao?
cho hai tia Oy,Oz cung nam tren 1 nua mat phang bo chua tia Ox.biet goc xOy=40 do,xOz=80 do
a,tinh goc yOz=?
b,tia Oy co la tia phan giac cua goc xOz khong?vi sao?
c,ve Ox' la tai doi cua tia Ox,Ot la tia phan giac cua goc x'Oz.tinh goc yOt=?
AI GIAI DUOC MINH TICK CHO 20 TICK
Tren cung mot nua mat phang bo chua tia Ox, ve 2 tia Oy va Oz sao cho goc xOy =30 do va goc xOz =105 do
a) Trong 3 tia Ox, Oy, Oz tia nao nam giua 2 tia con lai? Vi sao?
b) Ve tia Ot la tia doi cua tia Ox. Tinh so do goc cua goc yOz va zOt
c) Tia Oz co la tia phan giac cua goc yOt khong? Vi sao?
Cho hai tia Ox,Oy nam tren nua mat phang co bo la Ox sao cho xOy =75° xOz = 25°
a, trong ba tia Ox, Oy,Oz tia nao nam giua
b,tinh yOz
c,goi Om la tia phan giac cua goc yOz tinh xOm
