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18 tháng 9 2015

a)hinh tao thanh boi diem O va 1 phan duong thang bi chia ra boi diem Oduoc goi la 1 tia gốc O

b)diem R bat ki nam tren duong thang xy la goc chung cua 2 tia đối nhau

c)neu diem A nam giua 2 diem B va C thi:

-hai tia......AB và CA........doi nhau

-hai tia CA va ..........CB.............trung nhau

-hai tia BAva BC ........trùng nhau......

bạn nhấn đúng cho mình nhé , cảm ơn, 

 

28 tháng 9 2017

a : diem 32

28 tháng 9 2017

hihihihihihihihi!!!!

19 tháng 11 2017

ttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttt

1.Tim cac so tu nhien x sao cho:a/6 chia het cho (x-1)                                      b/14 chia het cho (2.x+3)2.Ve hinh de thay rang moi cau sau day la saia/Hai tia chung goc luon la hai tia doi nhaub/Hai tia chung goc luon la hai tia trung nhauc/Hai tia chung hoc luon la hai tia phan bietd/Hai tia co nhieu diem chung chi khi chung la hai tia trung nhaue/Hai tia phan biet va co chung goc luon la hai tia doi nhauf/Hai tia ko chung goc luon la hai tia khong co diem chung3/a/Ve 3 diem thang...
Đọc tiếp

1.Tim cac so tu nhien x sao cho:

a/6 chia het cho (x-1)                                      b/14 chia het cho (2.x+3)

2.Ve hinh de thay rang moi cau sau day la sai

a/Hai tia chung goc luon la hai tia doi nhau

b/Hai tia chung goc luon la hai tia trung nhau

c/Hai tia chung hoc luon la hai tia phan biet

d/Hai tia co nhieu diem chung chi khi chung la hai tia trung nhau

e/Hai tia phan biet va co chung goc luon la hai tia doi nhau

f/Hai tia ko chung goc luon la hai tia khong co diem chung

3/

a/Ve 3 diem thang hang A,B,C sao cho diem B nam giua hai diem A,C.Sau do hay ke ten:cac tia,cac cap tia doi nhau,cac cap tia phan biet,cac cap tia trung nhau co trong hinh ve do.

b/Ve 4 diem A,B,C,D tren mot duong thang sao cho diem B nam giua hai diem A,C va diem C nam giua hai diem B,D.Sau do hay ke ten:cac tia,cac cap tia doi nhau,cac cap tia phan biet,cac cap tia trung nhau co trong hinh ve do.

~~~~~~~~~~~~~Giup tui voi!!!!!~~~~~~~~~~~~~~

0
16 tháng 8 2016

2.Tính chất cộng đoạn thẳng

16 tháng 8 2016

2. TINH CHAT CONG CAC DOAN THANG

13 tháng 1 2016

a) hai nửa mặt phẳng đối nhau

b) đoạn thẳng cắt tia OB và OA

13 tháng 1 2016

a,Bất kì đường thẳng nào nằm trên mặt phẳng cũng là bờ chung của hai tia đối nhau.

b,Tia Ox nằm giữa hai tia OA, OB khi Ox cắt đoạn thẳng AB tại một điểm nằm giữa A và B.