Заданы координаты вершин пирамиды A1(0, -1, -1) A2(-2, 3, 5) A3(1, -5, -9) A4(-1, -6, 3 Найти: 1)Угол между ребром А1А4 и гранью А1А2А3; 2)Площадь грани А1А2А3: 3)Объем пирамиды; 4)Уравнение высоты, проведенной из вершины А4 к грани А1А2А3​

1. We played chess with Tomas yesterday.

2. We broke the rules.

3. He went to school yesterday.

4. They stood next to the bus stop.

5. She listened to music yesterday.

6. I sent an e-mail last week.

7. You did your homework yesterday.

8. They could swim when they were 4.

9. He took all sweets.

10. She ran yesterday.

11. We won a football match yesterday

12. My father worked last month.

13. We found a big tree in the garden yesterday.

14. She built a sandcastle yesterday.

15. I got a good mark yesterday.