В выпуклом четырехугольнике ABCD отмечены точки K,L,M и N - середины сторон AD, AB, BC и CD соответственно. Расстояние между точками K и L равно 6, между точками K и N - 12. Найдите периметр четырехугольника KLMN.

Вставьте The ,если это необходимо.

1.We have a very good train service from here to . . . city centre and most people go to . .
. work by train. You can go by . . . bus too, of course, but you can't get a season ticket
on . . . bus.

2.

I'd like to see . . . Mr Smith please. ~
Do you mean . . . Mr Smith who works in . . . box office or . . . other Mr Smith?

3.

Did you come by . . . air? ~
No, I came by . . . sea. I had a lovely voyage on . . . Queen Elizabeth II.

4. . . . most of . . . stories that . . . people tell about . . . Irish aren't true.

5.

. . . married couples with . . . children often rent . . . cottages by . . . seaside for . . .
summer holidays.
. . . men hire boats and go for . . . trips along . . . coast; . . . children spend . . . day on . . .
beach and . . . poor mothers spend . . . most of . . . time doing . . . cooking and cleaning.

6.

It's usually safe to walk on . . . sand, but here, when . . . tide is coming in, . . . sand
becomes dangerously soft. . . . people have been swallowed up by it.

7.

When . . . Titanic was crossing . . . Atlantic she struck an iceberg which tore a huge
hole in her bow. . . . captain ordered . . . crew to help . . . passengers into . . . boats.

8.

Everywhere . . . man has cut down . . . forests in order to cultivate . . . ground, or to
use . . . wood as . . . fuel or as . . . building material.

Каким цветовым фоном показывают горы на физических картах?(НЕПЕРЕПУТАЙТЕ ГОРЫ С РАВНИНАМИ)

в четырёх птичьих гнездах лежит 4,6,8 и 10 яиц соответственно.Какое наименьшее число яиц нужно переложить из гнезда в гнездо так,чтобы яиц стало поровну?