Предмет: Геометрия, автор: Levganqw

Угол HCD развёрнутый.

CG — биссектриса угла DCE,

CE — биссектриса угла DCF.

Вычисли углы ECG, DCF и HCF, если ∢DCE=26°.


a) ∢ECG=

°;


b) ∢DCF=

°;


c) ∢HCF=

°.

Приложения:

Ответы

Автор ответа: irynasokolova
0

Ответ:

a) ∢ECG=13 °; биссектриса делит <DCE пополам 26÷2=13°

b) ∢DCF=52 °; поскольку <DCE равен 1/2 < DCF,то 26+26=52°

c) ∢HCF=128 °, 180-52=128°

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