\(b,\widehat{EHG}=360-\widehat{EFG}-\widehat{FGH}-\widehat{FEH}=360-90-60-70=140\\ \Rightarrow x=180-\widehat{EHG}=40\)
Câu c ko thấy cái góc chỗ x tên gì nha
a: \(x=360^0-115^0-70^0-75^0=100^0\)
b: \(x=180^0-\left(360^0-60^0-90^0-70^0\right)=40^0\)