sự khác nhau về ý nghĩa giữa câu điều kiện loại 2 và loại 3. cho vd, phân tích vd cụ thể một chút ạ !

cảm ơn nhiều !

trầm cảm với bài toán, làm mình vẽ cả cái hình ra 

bạn tự cẽ hình nha 

1. xét △FCA và △EBA có 

góc A chung

góc CFA = góc BEA = 90 độ 

=> △FCA ∼ △EBA (g.g)

vì △FCA ∼ △EBA 

=> FC/EB = CA/BA = FA/EA = FA/CA = EA/BA

2. xét △AFE và △ACB có 

góc A chung

FA/CA = EA/BA (cmt)

=> △AFE ∼ △ACB ( c.g.c)

1, the teacher said she/he wasn't a teacher.

2, she said to me she had a big house.

3, she said to me she was gong to the party.

4, she said to me that she had given him my letter.

5, she said she had finished her work.

6, nam said he was not a pupil.

7, nam said he was going to HCM city.

8, he said to me he had gone to my house.

9, she says she knew my dificulties.

10, he said to me he had given him my present.

11, she said she had had a wonderful evening.

12, the teacher advises us to learn harder and harder.

13, my mother said we were going to have a party the next day.

14, i said to him our teacher would come on time.

15, mai's parents said that they were going to invite twenty guests to the party.