CH HINH THANG ABCD CO DAY NHO ABDAY LON CD HAI DUONG CHEO AC VA BD CAT NHAU TAI G.BIET DIEN H TAM GIAC AGD BANG 18 CMVUONG VA DIEN H TAM GIAC CGD BANG 22 CM VUONG.TINH DIEN H HINH THANG ABCD
Cho hinh thang ABCD co day lon gap 3 lan day be, hai duong cheo cat nhau o I . So sanh Sabc va Sadc
Cho hinh thang co duong cao 10 cm . Hieu hai day la 22 cm . Keo dai day nho bang day lon de thanh hinh chu nhat co chieu dai bang day lon, chieu rong bang chieu cao hinh thang . Dien tich duoc mo rong them bang 1/7 dien tich hinh thang cu.Phan mo rong ve phia ben phai co dien tich 90cm vuong .Hay tinh day lon cua hinh thang ban dau
cho hinh tam giac ABCD co day be bang 2/3 day lon biet day be bang 20cm chieucao bang 12,4cm.hoi :a,tinh DT hinh tam giac ABCD;b,cho duong cheo AB va CD cat nhau tai O hay chi ra nhung cap tam giac bang nhau trong hinh ve (co giai thich)
Ai nhanh nhat mk se tik nha.Nhanh len nhe mk dang can gap nho giai ro rang ra nhe
cho hinh thang abcd co 2 duong cheo ac va bc cat nhau tai o.Tinh dien tich hinh thang abcd,biet dien tich tam giac aob bang 4cm2,dien tich tam giac boc=12cm2
cho hinh tang ABCD 2 duong cheo AC va BD cat nhau tai G tinh dien tich hinh thang ABCD biet dien tich hinh tam giac ABG la 34.5 cm2
mot thua ruong hinh thang co day lon 40cm , day be bang 3/5 day lon . Biet dien tich hinh thang bang
khong phay hai tram bay hai met vuong. tinh duong cao cua hinh thang lon.
cho hinh thang abcd co duong cheo ac bd cat nhau tai o ab=12cm cd=24cm Saod=12cm2 tinh S abcd
giup minh nha mn
cho hinh thang abcd co day nho ab day lon cd. goi m la diem chinh giua doan cd. dien tich hinh thang abcd gap dien tich tam giac amd may lan
cho hinh thang abcd. hai duong cheo ac va bd cat nhau tai g . biet dien tich tam giac adg la 18 dien tich dgc la 25 . tinh Sadcd
