Chapter 2.4, Problem 6E

Describe the auxiliary line (segment) as determined, overdetermined, or underdetermined.

$\text{a})$ Through vertex $B$ of $\Delta ABC$, draw $\stackrel{\leftrightarrow }{AB}\perp \overline{AC}$.

$\text{b})$ Draw the line that contains $A$, $B$, and $C$.

$\text{c})$ Draw the line that contains $M$, the midpoint of $\overline{AB}$.