Các câu hỏi tương tự
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
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=8cm.Goi M la trung diem cua doan thang AB. Tren doan thang AB lay c,d sao cho AC=BD=3cm.
a) Tinh CD
b) Diem M co la trung diem cua doan thang CD khong ? Vi sao ?
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=7cm.Tren tia AB lay hai diem Cva Dsao cho AC=3cm;AD=6m
a)Tinh CB,BD,CD
b)TRong 4 diem A,B,C,D,diem nao la trung diem cua doan thang nao?tai sao
Trung diem E cua doan thang AB cach C mot khoang cach bao nhieu?
1. Cho doan thang AB = 16cm.Goi M la trung diem cua AB. Tren doan thang thang Ab lay hai diem C,D sao cho AC = BD = 5cm
a) tính CD
b) Diem M co phai la trung diem cua CD khong. Vi sao?
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
tren tia ox cho doan thang oa=4cm; ob = 2cm hoi a) trong ba diem o;a;b thi dien nao nam giua hai diem con lai b)chung to diem b la trung dien cua doan thang oa c) ve tia oy la tia doi cua tia ox tren tia oy lay dien c sao cho oc =3 so sanh bc va oa d) goi diem d la trung diem cua doan thang oc tinh do dai doan thang bd
Cho 2 điểm A,B bất kì. Lay diem C sao cho A la trung diem cua doan thang AB, lay diem D sao cho B la trung diem cua doan thang AD
a)Tai sao CD=3AB
b)Goi trung diem cua AB la M. Tim trung diem cua doan thang CD