Question

Answer 1

a) \(MP\perp MN,NQ\perp MN\Rightarrow MP//NQ\)

b) \(\left\{{}\begin{matrix}\widehat{Q_1}+\widehat{P_1}=180^0\left(trong.cùng.phía\right)\\\widehat{Q_2}=\widehat{P_1}\left(so.le.trong\right)\end{matrix}\right.\)

\(\Rightarrow\left\{{}\begin{matrix}\widehat{Q_1}=180^0-70^0=110^0\\\widehat{Q_2}=70^0\end{matrix}\right.\)