Question

Answer 1

Do tổng 4 góc trong tứ giác bằng 360 độ

\(\Rightarrow\widehat{M}+\widehat{N}+\widehat{P}+\widehat{Q}=360^0\)

\(\Rightarrow\widehat{M}+3\widehat{M}+4\widehat{M}+7\widehat{M}=360^0\)

\(\Rightarrow15\widehat{M}=360^0\)

\(\Rightarrow\widehat{M}=24^0\)

\(\Rightarrow\widehat{N}=3\widehat{M}=72^0\)