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tam giac abc co 1/2 so do goc a bang 2/3 so do goc b bang so do goc c tinh so do cac goc tam giac abc
tam giac abc co 1/2 so do goc a bang 2/3 so do goc b bang so do goc c tinh so do cac goc tam giac abc
Cho tam giac ABC= tam giac DEF biet goc C=5/6 goc B góc E-goc F =10 Tinh so do cac goc cua hai tam giac do
Cho tam giac ABC co goc A:B:C=2:3:4.Tinh so do cac goc cua tam giac ABC
Cho tam giac ABC co Goc A bang 60o Tia phan giac cua goc ABC cat tia phan giac cua goc ACB o I
a) Cho biet ABC=2xACB Tinh so do ACB
b) Tinh So do BIC
Cho tam giac ABC, biet goc A - goc B = goc C, 2 lan goc A = 2 lan goc B. Tinh so do cac goc cua tam giac ABC
giúp mình nhé help
cho tam giac ABC co goc B = 80 do, goc C =30 do . tia phan giac cua goc A cat BC o D . tinh doc ADC, goc ADB
tam giac ABC co so do cac goc A,B,C lan luot ty le voi 3;4;5 tinh so do cac goc cua tam giac A,B,C
Can giai dap nhan thank youu
1 cho tam giac abc can a , goc a bang 40 do lay d khac phia b so voi ac thoa man goc cad bang 60 do goc cad bang 80 do chung minh bd vuong goc voi ac2 cho tam giac abc vuong can a . d la diem bat ki tren ab. tren nua mat phang bo ab tu c ve tia bx sao cho goc abx bang 135 do. duong thang vuong goc voi dc ve tu d cat bx o e . chung minh tam giac dec vuong can3 cho tam giac abc can b goc abc bang 80 do , i la diem trong tam giac sao cho goc iac bang 10 do, ica bang 30 do tinh goc abi4 cho tam gia...
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1 cho tam giac abc can a , goc a bang 40 do lay d khac phia b so voi ac thoa man goc cad bang 60 do goc cad bang 80 do chung minh bd vuong goc voi ac
2 cho tam giac abc vuong can a . d la diem bat ki tren ab. tren nua mat phang bo ab tu c ve tia bx sao cho goc abx bang 135 do. duong thang vuong goc voi dc ve tu d cat bx o e . chung minh tam giac dec vuong can
3 cho tam giac abc can b goc abc bang 80 do , i la diem trong tam giac sao cho goc iac bang 10 do, ica bang 30 do tinh goc abi
4 cho tam giac abc can a co goc a bang 100 do , bc =a, ac =b ve phia ngoai tam giac abc ve tam giac abd can d co goc adb bang 140 do tinh ch vi tam giac adb theo a,b
ve hinh gium minh voi , xin mn day