Tren cung nua mat phang co bo la duong thang xy di qua diem O. Ve tia Ot , Oz sao cho xot =62° , yoz = 28 °.
a) Tinh toz
b) Viet ten cac goc nhon, goc vuong, goc tu
c) Viet ten cac cap goc phu nhau
d) Viet ten cac cap goc ke bu, bu nhau
Cac viet day du giup mk nhe
Giup mk voi mk dang can sieu gap
tren nua mat phang bo chua tia ox ,ve hai tia oy,oz sao cho goc xoy bang 110 do ,xoz bang 20 do
a)tinh so do goc yoz ?
b) ve tia phan giac om cua goc yoz va tia on la tia doi cua tia ox .Tinh so do goc mon ?
c)ke ten cac cap goc ke bu
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
a) Ve goc xOy (khac goc bet). Ve hai tia Om, On nam giua hai canh cua goc xOy. Hay ke ten cac goc co tren hinh ve
b)Tuong tu nhu cau a nhung truong hop goc xOy la goc bet
Tren nua mat phang co bo la duong thang xy di qua diem O ve 2 tia ot oz sao cho xot 62 yoz 28
a viet ten cac goc nhon goc vuong gov tu
b viet ten cac cap goc phu nhau
c viet ten cac goc bu nhau
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 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?
Giup minh nhe
Cho goc bet xOy. Tren nua mat phang bo xy ve goc xOn=40o va goc xOt=70o
a. Ke ten cac goc ke bu
b. Tinh goc mOn
c. Tia Om la tia phan giac cua goc nao?Vi sao?
Nhanh gium minh nhe.Ai tra loi nhanh va dung nhat minh tink cho
tren duong thang xy lay diem o. ve tia oz sao cho goc xoz = goc yoz
a, tinh goc xoz va yoz
b, ve tia ot nam trong goc xoz, hay ke ten cac cap goc bu nhau, phu nhau
c, ve tia om nam trong goc toy, gia su goc yom= 54 độ, goc xot= 36 độ
chung to goc toz va goc zom la 2 goc phu nhau