mong cac ban giup minh lay lai diem hoi dap
4000:2+33
Những câu hỏi liên quan
Cho doan thang AB dai 5 cm. Tren doan thang AB lay diem C sao cho AC = 3 cm
a, Lay diem D thuoc tia doi cua tia BC sao cho BD = 2 cm. So sanh do dai hai doan thang CD va AB
Mong cac ban giup minh, minh can truoc 9h
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 AH8cm.Tinh do dai doan thang BH.b)Chung minh rang:tam giac HABt/giac HACc)Goi D la diem nam tren doan thang AH.Tren tia doi cua tia DB lay diem E sao cho DEDB.CMR:AD+DEAC.d)Goi K la diem tren doan thang CD sao cho CK2/3CD.CMR:3 diem H,K,...
Đọc tiếp
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!
Cho tam giac ABC. Goi D la trung diem cua BC. Tren tia doi cua tia DA, lay diem M, sao cho DM = DA, tren tia doi cua tia AC, lay diem N, sao cho AN = AC. Goi K la giao diem cua NM va AB. Chung minh rang: K la trung diem cua AB.
MONG CAC BAN SE GIUP MINH, CAM ON!!
Cho doan thang AB dai 4cm. Tren tia AB lay diem C sao cho AC = 1cm
a, Tinh CB
b, Lay diem D thuoc tia doi cua tia BC sao cho BD = 2cm. Tinh BC
mong cac ban giup, minh can truoc 2h
a, Ta có : (1)
AC+CB=AB
=> 1cm +CB=4cm
=> CB=4cm-1cm =3cm
b, Từ (1) => CB=BC=3cm
cho tam giac ABC goi D la trung diem cua AB tren tia doi cua tia DC lay diem M sao cho DM = DC goi E la trung diem cua AC tren tia doi cua tia EM lay diem N sao cho EN = EM
a) Chung minh AM = AN
b) M;A;N thang hang
c) A la trung diem cua MN
giup minh nhe cac ban minh can gap lam ( ve hinh cho minh luon nha cam on cac ban rat nhiu hihi!! )
nhanh nhanh cac ban oi giup minh di ma
cac ban giup minh lam bai toan nay voi! Cam On cac ban nhieu!
cho tam giac ABC can tai dinh A . Tren canh AB lay diem D, tren tia doi cua tia CA lay diem E sao cho BD = CE.
Goi I la trung diem cua DE . Chung minh 3 diem B, I, C thang hang
1, tinh cac gia tri cac bieu thuc sau mot cach hop li; a,27+73-30:(25-10)133.(33+20)-33.(133+20)(15^2015+15^2016):15^20152,tim so nguyen x biet 2x-4-18(x+1)^32713-(x-2)113,nguoi ta to chuc phat qua cho cac em nho nhan dip tet trung thu gom co 133goibanh,80goi keo,170hop mut duoc chia deu vao cac phan qua.nhung khi chia thi thi con thua 13 goi banh ,8goi keo va 2 hop mut khong chia duoc cac phan qua.hoi nguoi ta da phat qua duoc nhieu nhat bao nhieu ban nho4,tren tia ax,ve cac diem b,c sao cho ac...
Đọc tiếp
1, tinh cac gia tri cac bieu thuc sau mot cach hop li;
a,27+73-30:(25-10)
133.(33+20)-33.(133+20)
(15^2015+15^2016):15^2015
2,tim so nguyen x biet
2x-4=-18
(x+1)^3=27
13-(x-2)=11
3,nguoi ta to chuc phat qua cho cac em nho nhan dip tet trung thu gom co 133goibanh,80goi keo,170hop mut duoc chia deu vao cac phan qua.nhung khi chia thi thi con thua 13 goi banh ,8goi keo va 2 hop mut khong chia duoc cac phan qua.hoi nguoi ta da phat qua duoc nhieu nhat bao nhieu ban nho
4,tren tia ax,ve cac diem b,c sao cho ac=4,ab=8.
a,hoi trong 3 diem a,b,c diem nao nam giua 2diem con lai .
b,diem c co phai la trung diem cua doan thang ab khong . vi sao
5, tinh tong a=6+18+36+60+.........+29700+30300
mong cac ban se giup minh nhe ban nao giup minh se like cho nhieu cai va nho co loi giai phep tinh dang hoang nha i love you
.
minh xin cac ban cha loi cau hoi cua minh!minh con nhieu bai tap lam mong cac ban giup,va cac ban dung giup o day cac ban ket ban voi minh roi nhan cho minh biet ket qua nha!
Cho tam giac abc can tai a, diem m la trung diem cua bc. Ke mh vuong goc voi ab. Goi e la mot diem thuoc doan thang ah. Tren nua mat phang ac lay f sao cho goc aef bang 2 lan goc emh. CMR fm la tia phan giac cua goc efc
Mong cac ban giup minh, minh dang can gap :D