Neu 1 tam giac co do dai 2 duong cao lan luot la 32;52 va duong cao thu 3 cung la so ching phuong thi do dai duong cao thu 3 la bao nhieu?
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?
mot tam giac co do dai 3 canh la a,b,c.goi ha,hb,hc theo thu tu la do dai 3 duong cao tuong ung.chung minh rang,neu ha=4,hb=5,hc=8 thi a2>.b2+c2
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 DO DAI CAC CANH TAM GIAC ABC LA ;B;CVA DUONG CAO TUONG UNG LA HA;HB;HC BIET CHU VI TAM GIAC LA 94CM VA CAC DUONG CAO THEO THU TU TREN TI LE VOI 3;4;5 TIM A;B;C
biet do dai 3 canh cua 1 tam giac ti le voi 2,3,5 .Tinh do dai 3 duong cao cua tam giac biet tong cua cung la 62 cm
giai cach lam giup minh nhe
ai lam truc thi minh tick cho nha !
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
Ba duong cao cau tam giac ABC co do dai la : 4;12;a.Biết rang a la so tu nhien. Tìm a
Cho tam giac ABC co BC=10cm. cac duong trung tuyen BD va CE co do dai lan luot la 9cm va 12cm.CMR :BD vuong goc vs CE