Question

1. draw a diagram of $overline{nc}$ with midpoint b. label with appropriate congruency marks

Explanation:

Step1: Draw a line segment

Draw a straight - line segment and label the endpoints as N and C.

Step2: Locate the mid - point

Using a compass or by estimation (for a rough sketch), find the mid - point of the line segment $\overline{NC}$ and label it as B.

Step3: Add congruency marks

Add one short dash on $\overline{NB}$ and one short dash on $\overline{BC}$ to indicate that $\overline{NB}\cong\overline{BC}$.

Answer:

A line segment $\overline{NC}$ with mid - point B labeled, and $\overline{NB}$ and $\overline{BC}$ marked with congruency marks (one short dash on each).