Question

Các bạn làm bài sau nhé :

Answer 1

a,\(=>\angle\left(C1\right)=x=180-40-100=40^o\)

\(=>y=\angle\left(E\right)=180-40-36=104^o\)

b,\(y=180-[45+\left(180-142\right)]=97^o\)

\(=>x=70+97=167^o\)

c,\(x=\angle\left(A\right)=50^o\left(so-le-trong\right)\)

\(y=\angle\left(C\right)=70^O\left(so-le-trong\right)\)

d,\(\angle\left(C\right)=180-80-70=30^o\)

AD phân giác \(=>\angle\left(BAD\right)=\angle\left(CAD\right)=\dfrac{80}{2}=40^o\)

\(=>\angle\left(ADB\right)=180-(70+\dfrac{80}{2})=70^o\)

\(=>\angle\left(ADC\right)=180-70=110^o\)