Cho tam giac ABC, biet do dai day BC la 27m , chieu cao AH la 20m . Tren AB lay diem M sao cho Ma = MB . Tren AC lay diem M sao cho BP = PC . Tinh DT tam giac MNP

Luu Y (co ca hinh va cach lam nhe)

cho hinh tam giac ABC vuong tai A co 3 canh AB =6 cm AC =8 cm va BC =10 cm. ve chieu cao AH tu dinh A den canh day bc.a) tinh chieu cao ah.  b) tren canh BC lay diem E sao cho be = 2xEC. tinh dien tich hinh tam giac ABE

 cho hinh tam giac abc co dien tich la co day bc =12cm chieu cao ha tu dinh a xuong day bcbang 2/3 do dai bc tren canh ac lay diem M sao cho am=3/5 mc tinh dien tich abm

cho hinh tam giac abc co do dai day bc 20 cm chieu cao ah la 12 cm goi m la diem trung tam cua canh day bc tinh dien tich cau hinh tam giac ABM

cho tam giac ABC co goc A vuong canh AB = 40m canh AC = 30m canh BC = 50m tren canh AC lay diem F tren canh AB lay diem E sao cho hinh thang EFCB co chieu cao la 12m tinh dien tich cua tam giac AEF va dien tich hinh thang EFCB ?

Cho tam giac abc co canh ab 62cm, chieu cao tuong ung voi canh day ab=24cm. Trn canh ab;bc;ca; lan luot lay cac trung diem m,n,p noi cac trung diem nay lai dc tam giác mnp . Tinh dt tam giac mnp

1.Cho tam giac ABC co canh day BC la 35cm , chieu cao AH la 24cm . Tren AH lay diem M sao cho MH = 1/3 AH . Tinh dien tich tam giac ABC va dien tich tam giac MBC

2.Cho tam giac ABC co dien tich la 28,8cm² . Tren AB lay diem N sao cho AN = 1/3 NC . Noi M voi N . Tinh dien tich Tam giac AMN

cho hinh tam giac abc co dien tich la 120cm2 canh day dai 20cm chieu cao dai 12cm tren canh ac lay diem m sao cho mc =1/3 ma tinh dien tich tam giac abm

cho hinh tam giac abc co do dai day bc la 20cm, chieu cao ah la 12cm. goi m la trung diem cua canh day bc. tinh dien tich hinh tam giac abm