Các câu hỏi tương tự
Tren doan thang AC dai 12cm lay diem B sao cho AB = 5cm
a) Tinh do dai cua doan thang BC
b) Goi MN lan luot la trung diem cua cac doan thang AB, AC.Tinh do dai doan thang MN
c) Lay D thuoc tia doi cua tia CA sao cho CD = 7cm.CTR diem C la trung diem cua doan thang BC
Cho doan thang AB dai 8cm va mot diem C thuoc doan thang AB.Biet AC=4cm.
a)Diem C co phai la trung diem cua doan thang AB khong?Vi sao?
b)Goi D la trung diem cua doan thang AC.Tinh do dai doan thang BD.
tren doan thang AC co do dai 12 cm ,lay diem B sao cho AB=5 cm .a, tinh do dai cua doan thang BC.b,goi M,N lan luot la trung diem cua doan thang AB ,BC . tinh do dai doan thang MN.c, lay diem D thuoc tia doi cua tia CA sao cho CD =7 cm . chung to rang diem C la trung diem cua doan thang BD
Cho doan thang AB=5cm,M bat ky thuoc doan thang AB.Goi E,F lan luot la trung diem cua MA va BM.Chung to do dai EF khong phu thuoc vao vi tri cua M tren doan thang AB
Cho doan thang AB=5cm ,M bat ki thuoc doan thang AB .Goi E,F lan luot la trung diem cua AM va BM.Chung to do dai EF khong phu thuoc vao vi tri cua M tren doan thang AB
Cho doan thang AB = 6 cm. Lay 2 diem C,D thuoc doan thang AB sao cho AC=BD=2 cm. Goi M la trung diem cua AB. a) Giai thich vi sao M la trung diem cua CD b) Tim tren hinh ve nhung diem khac cung la trung diem cua doan thang
chi tiet cho minh nha
cho doan thang AB dai 6 cm.Goi C la trung diem cua AB.Lay D va E la hai diem thuoc doan thang AB sao cho AD=BE =2cm. Vi sao Cla trung diem cua DE?
cho doan thang ab=6cm diem m thuoc doan thang ab biet bm =2cm
a tinh do dai doan thang am
b tten tia doi cua tia áb lay diem d sao cho ad=4cm tinh do dai doan thangDM
c diem A co phai la trung diem cua doan thang DM
tren duong thang a lay 2 diem A va B sao cho AB=2cm lay diem C sao cho A la trung diem cua doan thang BC lay diem D sao cho B la trung diem cua doan thang AD a)tinh do dai doan thang CD b) goi trung diem cua AB la M tim trung diem cua doan thang CD