Các câu hỏi tương tự
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
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
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
1.tren cung 1 nua mat phang bo chua tia Ox,ve cac tia Oy va Oz sao cho widehat{xOy}30,widehat{xOz}60a,tinh so do widehat{yOz}?b,ve tia Ot la tia doi cua tia Ox.tinh so do widehat{tOz}?c,ve tia Om la tia phan giac cua widehat{tOz}.chung to rang tia Oz la tia phan giac cua widehat{xOm} khong can ve hinh ,khong can lam cua a.lam cau b,c
Đọc tiếp
1.tren cung 1 nua mat phang bo chua tia Ox,ve cac tia Oy va Oz sao cho \(\widehat{xOy}\)=30,\(\widehat{xOz}\)=60
a,tinh so do \(\widehat{yOz}\)=?
b,ve tia Ot la tia doi cua tia Ox.tinh so do \(\widehat{tOz}\)=?
c,ve tia Om la tia phan giac cua \(\widehat{tOz}\).chung to rang tia Oz la tia phan giac cua \(\widehat{xOm}\)
khong can ve hinh ,khong can lam cua a.lam cau b,c
Cho goc bet xOy. Tren cung 1 nua mat phang bo xy, ve cac tia Oz va Ot sao cho goc xOz bang 70 do, goc yOt bang 55 do. Ve tia phan giac On cua goc xOz. Tinh goc nOt.
tren cung mot nua mat phang bo chua tia ox ve goc xot 40 do va goc xoy 80 do a tinh goc yot b tia ot co la tia phan giac cua goc xoy khong vi sao c ve goc xom ke bu voi goc xot ve on la tia phan giac cua goc xom tinh goc mon
cho tam giac ABC co BC=4cm. tren tia doi cua tia BC lay diem D sao cho BD=2cm/ a, tinh do dai CD; b,goi M la chung diem cua CD.tinh do dai BM;c,biet goc DAC bang 112 do .Ãxtia phan giac cua goc BAC va goc BAD. tinh so do goc xAy;d, tren nua mat phang bo la duong thang AC co chua diem D neu ve them n tia goc A phan biet khong trung voi cac tia ÂC,Ã,AB,Ay,AD thi co tat ca bao nhieu goc dinh A va Ay thu tu la
vẽ hai góc kề bù widehat{xoy}va widehat{yoz},biet widehat{xoy} 50 do . ve tia oa la tia phan giac cua widehat{xoy}a, tinh so do widehat{yoz}b, ve tia ob la tia phan giac cua widehat{yoz}. tinh so do widehat{aob}c, tren cung mot nua mat phang bo la duong thang xz co chua tia oy,ve widehat{zot}50 do . hoi tia oy la tia phan giac cua widehat{aot}khong ? vi sao ?
Đọc tiếp
vẽ hai góc kề bù \(\widehat{xoy}\)va \(\widehat{yoz}\),biet \(\widehat{xoy}\)= 50 do . ve tia oa la tia phan giac cua \(\widehat{xoy}\)
a, tinh so do \(\widehat{yoz}\)
b, ve tia ob la tia phan giac cua \(\widehat{yoz}\). tinh so do \(\widehat{aob}\)
c, tren cung mot nua mat phang bo la duong thang xz co chua tia oy,ve \(\widehat{zot}\)=50 do . hoi tia oy la tia phan giac cua \(\widehat{aot}\)khong ? vi sao ?