Activity: (Answer on a 1 whole sheet of pad paper)
Construct the following.
1. Construct \( \overline{O P} \) bisecting the given \( \overline{\mathrm{MN}} \).
2. Given \( \overline{\mathrm{K}} \), construct its segment bisector \( \mathrm{LM} \).
3. Given \( \angle \mathrm{LMN} \), construct a \( \overrightarrow{B D} \) bisecting \( \angle \mathrm{LMN} \).
4. Given \( \overleftrightarrow{X Y} \) and \( \cdot Z \) not on the line, construct \( \overleftrightarrow{A B} \), through the point perpendicular to \( \overleftrightarrow{X Y} \).
5. Draw \( \overleftrightarrow{A B} \) and construct \( \overleftrightarrow{C D} \) parallel to \( \overleftrightarrow{\mathrm{AB}} \).