bai 1: cho tam giac ABC, trong tam G(-2; 0). Phuong trinh AB: 4x + y + 14= 0;   AC: 2x + 5y - 2= 0. Tim A, B, C
bai 2: cho hinh chu nhat ABCD co dien tich S= 12. Tam I la giao cua 2 duong thang d1:  x - y - 3= 0:  d2: x + y - 6= 0. Trung diem M cua AD la giao cua d1 va Ox. Tim A, B, C, D
chỉ có đáp án bài 1 lấy k? –  tranthy97 02-03-13 08:12 PM
2. Tìm được I,Mlập AD S=4.d(I;AD).d(I;Ab)Lập AB là xong –  Pooh 01-03-13 09:47 PM
1. Tìm AGọi B có toạ độ nằm trên AB=>C =3G-A-BCho C thuộc Ac –  Pooh 01-03-13 09:44 PM

Câu hỏi này được treo giải thưởng trị giá +1000 vỏ sò bởi thanhhuyen431@gmail.com, đã hết hạn vào lúc 03-03-13 09:32 PM

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