Jun-len-xơ
Sắt đoàn
35
7
cliffs waterfalls lake mountains hill
valley shores forest cave desert
1. She was standing at the mouth of the and heard a noise coming from inside.
2. The birds breed mainly on sea and in sea caves.
3. They enjoyed the beautiful views of snow-capped
4. Very little can grow in this arid
5. We were on a ridge above a green ,with the mountains beyond it.
6. She could see falling down some of the mountain sides.
7. The area we passed through was once thick
8. They can go fishing in the
9. Wearing a pair of trainers, he walked up the steep climber. with the energy of a young mountain
10. The fish is commonly found off the of Australia.
cliffs waterfalls lake mountains hill
valley shores forest cave desert
1. She was standing at the mouth of the and heard a noise coming from inside.
2. The birds breed mainly on sea and in sea caves.
3. They enjoyed the beautiful views of snow-capped
4. Very little can grow in this arid
5. We were on a ridge above a green ,with the mountains beyond it.
6. She could see falling down some of the mountain sides.
7. The area we passed through was once thick
8. They can go fishing in the
9. Wearing a pair of trainers, he walked up the steep climber. with the energy of a young mountain
10. The fish is commonly found off the of Australia.
Bài 7: Cho tam giác ABC vuông tại A, biết AB = 6cm; AC = 8cm. Vẽ đường tròn tâm O đường kính AC cắt BC tại H. 1) Chứng minh VAHC vuông. Tính độ dài BC và AH. 2) Kẻ AI vuông OB tại I, tia AI cắt (O) tại D. Chứng minh: BD là tiếp tuyến của đường tròn (O)
