1. Английский язык
  2. Abcd- 4 угольник угола:

Abcd- 4 угольник угола: уголв: уголс: уголд=1: 2: 4: 5 угола-? уголв-? уголс-? уголд-?

jauprosto jauprosto    2   28.09.2019 02:10    0

Ответы
CoralineGilmor CoralineGilmor  08.10.2020 23:44
Угол А=х
угол В=2х
угол С=4х
угол Д=5х
х+2х+4х+5х=360
12х=360
х=360÷12
х=30° (угол А)
30°×2=60° (угол В)
30°×4=120° (угол С)
30°×5=150° (угол Д)
30°+60°+120°+150°=360°
ОТВЕТ:уголА=30°; уголВ=60°; уголС=120°; уголД=150°
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