trong dot kiem tra cong nhan lien doi xuat sac cap tinh tai mot truong trung hoc co so, co 45 doi vien duoc moi tham gia tra loi cau hoi(moi doi vien phai tra loi mot cau). ket qua kiem tra co 2 doi vien dat diem 10, khong co doi vien nao duoi diem 2(diem kiem tra la mot so tu nhien tu 0 den 10). Hay chung minh co it nhat 6 doi vien bang diem nhau
Qua 5 diem ko co 3 diem nao thang hang hoi : a) Ve dc bao nhiu duong thang phan biet di qua 2 trong 5 diem. b) Ve dc bao nhiu doan thang phan biet nhan 2 trong 5 diem do la cac diem dau mut . c) Ve dc bao nhiu tam giac phan biet nhan 3 trong 5 diem lam dinh . Ai tra loi nhanh va dung m cho 1 like . Anh em tra loi dc cau nao thi tra loi gium minh
Qua 5 diem ko co 3 diem nao thang hang hoi : a) Ve dc bao nhiu duong thang phan biet di qua 2 trong 5 diem. b) Ve dc bao nhiu doan thang phan biet nhan 2 trong 5 diem do la cac diem dau mut . c) Ve dc bao nhiu tam giac phan biet nhan 3 trong 5 diem lam dinh . Ai tra loi nhanh va dung m cho 1 like . Anh em tra loi dc cau nao thi tra loi gium minh
nguoi dau tien gui cau tra loi va ket ban voi minh,minh se tick cho nguoi do
Xin chao cac ban,cac gia su.Hom qua,minh co mot bai toan lop7 chua lam duoc,bay gio da co cau tra loi-cam on ban Lai Tri Dung nhe.Bay gio,minh co mot cau hoi nua,mong moi nguoi chi giup minh a!
CHO tam giac ABC can tai A.Ve AH vuong goc voi BC tai H.
a)Cho biet AH=8cm.Tinh do dai doan thang BH.
b)Chung minh rang:tam giac HAB=t/giac HAC
c)Goi D la diem nam tren doan thang AH.Tren tia doi cua tia DB lay diem E sao cho DE=DB.CMR:AD+DE>AC.
d)Goi K la diem tren doan thang CD sao cho CK=2/3CD.CMR:3 diem H,K,E thang hang
Minh mong la co cau tra loi
som nhat. CAM ON NHIEU LAM AAAAAA!
Kiem nguoi ket ban tren facebook
phai tra loi duoc cau hoi:
8+1-2+9+?
ve 1 doan thnag AB tren gaiy trong hoac giay mong hay gap to giay de nep gap trung voi duong trung truc cua daon thang ay
tra loi nhanh nhe
CHO GOC BET aOb TREN CUNG 1 NUA MAT PHANG BO AB. VE CAC TIA OC VA OD SAO CHO GOC AOC=60 DO; GOC BOD = 1/2 GOC AOC. CHUNG TO RANG 2 TIA OC VA OD VUONG GOC VOI NHAU.'
AI TRA LOI NHANH NHAT MINH TICK CHO 3 CAI VA KET BAN NHE. THE LUON.
co ban nao muon kb voi minh ko
va bay gio mik giao cho 1 cau ?
co ai ham mo khoi my không nao
va cac ban hay cha loi cau nay
1 cau be di ra cong vien choi
gap 1 ba cu cau be lay chiec dep nhem
vao ba cu hoi cau be mat hai thu do la
nhung thu gi cac ban thu doan xem ai
tra loi dung dau tien mik tich cho nhanh len