Предмет: Геометрия, автор: alenchiksebenov2006

сделайте плз, геометрия 7 класс​

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Ответы

Автор ответа: binamaksimchuk
2

Ответ:

Объяснение:

Сумма односторонних внутренних углов равна 180°.

<1+<2=180°

<1=x

<2=3x

x+3x=180°

4x=180°

x=180°÷4

x=45°   <1

<2=3×45°=135°

alenchiksebenov2006: спасибо, большооооое
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