стороны треугольника равны 5 см , 7 см, 11 си Найдите стороны треугольника, вершинами которого являются середины сторон данного триеугольника​

A1B1 , A1C1, B1C1 - средние линии

A1C1=  0,5 × 11= 5.5;

A1B1 = 0.5 * 5 = 2.5;

B1C1 = 0.5 * 7 = 3.5;

ответ:  5,5 см 2,5 см 3.5 см

Задание 2

1. can  you swim well? – No, I can’t .  

 c) can, can’t

2. may  we go to the park? – No, you may not, you are isolated at the moment.

 b) may, may not;  

3. They  must correct all the mistakes in their tests, then submit them to the teacher.

 c) must

4. My grandmother could  skate, when she was young.

a) could;  

Задание 2

1. I need some more spare time to prepare for examination.

a)  need;  

2. You should look after your little sister, she is so naughty!

a) should;  

3. Our parents need to get foreign passports for a business trip.

b) need;  

4. Helen should not go to the college, she feels bad.

b) should

Задание делай 3 делай сам

P.s Привет, студент  ААДК )))

Задание 2

1. can  you swim well? – No, I can’t .  

 c) can, can’t

2. may  we go to the park? – No, you may not, you are isolated at the moment.

 b) may, may not;  

3. They  must correct all the mistakes in their tests, then submit them to the teacher.

 c) must

4. My grandmother could  skate, when she was young.

a) could;  

Задание 2

1. I need some more spare time to prepare for examination.

a)  need;  

2. You should look after your little sister, she is so naughty!

a) should;  

3. Our parents need to get foreign passports for a business trip.

b) need;  

4. Helen should not go to the college, she feels bad.

b) should

Задание делай 3 делай сам

P.s Привет, студент  ААДК )))