stanefimov
?>

5 Write a word from the box in each gap. fact.grow • lick • lifetime memory sweetHorses are amazing animals! They have a great (1)and they can remember people, places and things that happen to them during their whole (2 They are quitefriendly too. They aren't often scared of people and they can (3)food from a person'shand while they stand in front of them. They are very (4) ►animals when they areyoung. They really like to play! They (5)quite fast and they become adults afterabout four or five years. An interesting (6)is that horses only sleep for about threehours a day, and they usually sleep while they are standing. Imagine people doing that! No needfor beds!​

Геометрия

Ответы

Vikkitrip
Высота равнобедренного треугольника, проведенная к основанию, делит равнобедренный треугольник на два прямоугольных треугольника. И является биссектрисой угла при вершине.
Пусть угол при основании х, тогда угол между высотой и боковой стороной равнобедренного треугольника равен (х-15°).
Угол при вершине в  два раза больше 2(х-15°)

Сумма  углов  треугольника равна 180°
х+ х+2·(х-15°)=180°
4х=210°
х=52,5°
х-15°=52,5-15=37,5°
Угол при вершине равнобедренного треугольника в 2 раза больше, так как высота равнобедренного треугольника является также и биссектрисой.
ответ. углы при основании 52,5°; 52,5° и угол при вершине 75°

Ответить на вопрос

Поделитесь своими знаниями, ответьте на вопрос:

5 Write a word from the box in each gap. fact.grow • lick • lifetime memory sweetHorses are amazing animals! They have a great (1)and they can remember people, places and things that happen to them during their whole (2 They are quitefriendly too. They aren't often scared of people and they can (3)food from a person'shand while they stand in front of them. They are very (4) ►animals when they areyoung. They really like to play! They (5)quite fast and they become adults afterabout four or five years. An interesting (6)is that horses only sleep for about threehours a day, and they usually sleep while they are standing. Imagine people doing that! No needfor beds!​
Ваше имя (никнейм)*
Email*
Комментарий*

Популярные вопросы в разделе

kryukovaem
karinasy4ewa
kolyabelousow4059
Валерьевна1601
Мартынова1638
ВасильевнаСергей
Leon-12
potapin
Morozova-Starikov
ИП_Рамис873
Городничий_Коновалова384
Владимирович_Ралина
Kozloff-ra20146795
prokodasha
Konstantinovna1936
▲