cho đoạn thẳng AB=5cm trên nửa bờ mặt phẳng AB vẽ tam giác ABD sao cho AD=3cm,BD=4cm.Trên nửa mặt phẳng còn lại vẽ tam giác ABE sao cho BE=3cm,AE=4cm.Chứng minh;a, tam giác ADB vuông,b,góc AEB=gócBDA,c,AD//BE

Bài 3 (2 điểm): Trong mặt phẳng Oxy, cho tam giác ABC có A (-2;3), B (1;-1), C
(2;1).
a. Viết phương trình tham số đường thẳng chứa cạnh BC của tam giác ABC.
b. Viết phương trình tổng quát đường thẳng d đi qua A và vuông góc với
d’: 3x - 2y + 1=0

Tìm m để bất phương trình sau nghiệm đúng với mọi
x

(m - 3)x2
-2mx + m - 6 < 0

Câu 4: (2 điểm) Cho tam giác ABC có A(-1;-2) B(3;-1) C(0;3)
a. Viết phương trình đường cao AH.
b. Viết phương trình đường thẳng đi qua trọng tâm G của tam giác và song song với BC.

IV. Use the word given in capitals at the end of each line to form a word that fits in the gap
in the same line.
1. Laptops and wireless technologies allow students to access ___
__ relevant to class topics immediately.
2. By allowing our students to use digital devices in class, we are
creating an opportunity to teach them to think ____ ____ about
technology use in their education and life.
3. Digital devices offer an opportunity to ____ _____
students about media use.
4. Most of the teachers see the new classroom technology as _____

INFORM
CRITIC

EDUCATION

______ in the educational process.
5. Almost every question students have in class is at their fingertips,
________ ____ them connected with what is going on around them.
USE
KEEP

V. Combine each pair of sentences into one. Use comma (,) if neccessary.
1. The girl looked very upset. Her electronic dictionary broke down.
►,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
2. His grandmother had a great influence on his life. She was a hard – working woman.
►,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
3. Mai is interested in physics. I don&#39;t like it.
►,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
4. Tom has hundreds of books. They are all in foreign languages.
►,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
5. Shakespeare was a famous playwright. His birthplace was Stratford - upon - Avon.
►,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
6. I will always remember the teacher. He taught me how to read and write.
►,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

I. . Use'who',which,that or whose  to complete each of the sentences.
1. People ____ ____ work involves using a computer for most of the day may suffer from
headaches.
2. Mr Xuan Truong, _____ ______ was my first teacher, received an award for teaching
excellence.
3. That's Peter, _____ _____ father has just come back from the Philipines.
4. That media player, _____ _____ I often use to practise English, has some great apps.
5. The house _____ ______ my father built is big.
6. The woman ______ ____ you have just spoken to is my favourite English teacher.
II. . Complete the sentences with the following given words.
digital personal mobile technology electronic applications
1. My son, who is a promising pianist, is now interested in composing _____ ______ music.
2. Please don't ask him questions about his family. He hates answering ______ ____ questions.
3. The phrase ‘_________ natives'; refers to people who are familiar with computers and the
Internet from an early age.
4. I'm looking for some new ____ ___ to put on my smartphone to improve my English
pronunciation.
5. That laptop, which has the latest _____ _____, is very expensive.
6. People are now familiar with the term m - learning or ____ ____ learning, which focuses on
the use of personal electronic devices.