Предмет: Геометрия, автор: tipokrylit228

Отрезок AD-биссектриса треугольника ABC. Через точку D проведено прямая паралельная стороне AB и пересикается стороне AC в точке F
НАЙТИ УГРЫ ТРИУГОЛЬНИКА ADF если угол BAC=72"

Ответы

Автор ответа: Ferinut
2

<BAD = < DAC (т.к бисс)

<BAD = <ADF = 72'' (внутренние накрест лежащие углы при DF||AB и секущей AD

Значит в треугольнике ADF < ADF = <DAF = 72'', < AFD = 180°- 72'' = 179° 57' 36''

(Если я в подсчетах не ошиблась)

Приложения:

van14ace: и еще поможешь
van14ace: There are two types of animals.

We know wild animals. They are those that live in the woods, jungles and in the fields. They are: foxes, tigers, wolves, elephants, hares and so on.
van14ace: Many years ago when there were no cars and trucks people used horses and bulls working in the fields. Dogs are our great friends but they also guard our houses and they are used in the army and by the police. Cats catch mice and rats. As for other domestic animals they are also very useful. Hens, ducks, geese, turkeys are a source of poultry and eggs. Cows and goats produce milk.
van14ace: It should be said that both wild and domestic animals can be good actors and we can see them in the circus. There are animal-trainers that train a certain kind of animals. For example, Kucklachov has the theatre where cats play main parts. Such shows are really funny and interesting.

Write three words into each gap:

1. They are: foxes, tigers, wolves, elephants,
on.

2. Cows and
.

3. There are animal-trainers that train a certain
. баллов нет
van14ace: баллов нет и ответов нет
van14ace: помоги пжжж
van14ace: и кстати я с другого акка зайду и поставлю везде 5 и спс
Ferinut: секунду
Ferinut: Я не поняла задание
Ferinut: 1. hares 2.goats 3.kind of animals
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