Các câu hỏi tương tự
cho 2 diem co dinh A va B nam cung phia voi duong thang d.Hay tim tren d diem C de chu vi cua tam giac ABC nho nhat
Cho truoc diem a va duong thang d di qua diem a ve 2018 duong thang phan biet . goi x la so duong thang vuong goc voi d, y la so duong thang khong vuong goc void trong 2018 duong thang da cho..
Tim gia tri nguyen lon nhat cua x, y
Tim gia tri nguyen nho nhat cua x,y
cho tam giac abc co cac cach khong doi. lay diem d va m tren canh ab sao cho ad = bm. qua d va m ve cac duong thang song song voi bc cat ac lan luot tai e va n. chung minh de+mn khong doi khi d va m di chuyen tren canh ab.
Cho Tam giac ABC co diem M tren canh BC . Ve tia ME song song voi AB (E thuoc AC ). MF song song voi AC ( F thuoc AB). Xac dinh vi tri cua diem M de tia MA la tia phan giac cua goc EMF
cho tam giac abc can tai a.tren duong thang vuong goc voi ac tai c lay diem d sao cho hai diem b,d nam khac phia doi voi duong thang ac.goi k la giao diem cua duong thang qua b vuong goc voi ab va duong thang qua trung diem m cua cd vuong goc voi ad.c/m kb=kd
cho tam giac ABC co B va C la goc nhon;M nam gia B va C goi d la tong cac khong cach tu B va C den AM. a) CM: d<BC b) xac dinh vi tri diem M tren BC de d dat gia tri lon nhat
cho tam giac abc goi m la trung diem cua bc. tu a ke ad song song voi bm sao cho ad=bm. d va b nam khac phia so voi canh ab
a, chung minh di=im ( dm cat ab tai i) roi suy ra m,i,d thang hang
b, chung minh bd song song voi am
Cho tam giac ABC can tai A.Tren duong thang vuong goc voi AC tai C lay diem D sao cho hai diem B,D nam khac phia doi voi duong thang AC.Goi K la giao diem cua duong thang qua B vuong goc voi AB va duong thang qua trung diem M cua CD vuong goc voi AD.C/m KB=KD
Cho tam giac ABC can tai A.Tren duong thang vuong goc voi AC tai C lay diem D sao cho hai diem B,D nam khac phia doi voi duong thang AC.Goi K la giao diem cua duong thang qua B vuong goc voi AB va duong thang qua trung diem M cua CD vuong goc voi AD.C/m KB=KD