Cho tam giac ABC co mc=1/4BC,bk la duong cao cua tam giac ABC,MH la duong cao cua tam giac AMC co AC la day chung. So sanh do dai BK va MH

cau 1 cho tam giac can abc co ab=ac=17 va bc=30 ve ra ngoai tam giac abc tam giac bcd voi cbd=90 do va cd song song voi ab tinh do dai bd

cau 2 cho tam giac abc co goc b =70 do goc c =40 do cac duong cao bd va ce cat nhau tai h goi i la trung diem cua ah m la giao cua tia phan giac goc eid voi bc tinh goc imd

Ve hinh tam giac roi so sanh

Tam giac ABCcoMC=1/4 ×BC,BK la duong cao cua tam giac ABC,MHla duong caocua tam giac AMC co AC la day chung.

So sanh do dai BK va MH

Cho tam giac ABC co do dai cac duong cao la 3cm, 4cm, 6 cm. Tinh chu vi cua tam giac biet do dai canh dai nhat it hon tong do dai hai canh con lai la 1 cm?

cho tam giac ABC co do dai ba duong trung tuyen la 15; 36; 39 tinh dien tich tam giac 

Cho 1 tam giac co do dai 2 duong cao lan luot la 3²va5².Biet do da duong cao thu 3 cung la co chinh phuong thi do dai duong cao thu 3 la bao nhieu?

cho mot tam giac co chhu vi =60cm.cac duong cao co do dai la 12cm;15cm;20cm.vay cac canh tuong ung co do dai la

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

chu vicua mot tam giac la 60 cm .cac duong cao co do dai la12cm ;15cm;20cm .tinh do dai moi

canhcua tam giac do