Chapter 5, Problem 7CR

To determine

To prove: that $SANG$ is a parallelogram.

Explanation of Solution

Given information:

Given figure,

Given:

  $\overline{SZ}\cong \overline{NZ}$

Calculation:

Figure shows a quadrilateral $SANG$ .

Consider that $\overline{SZ}\cong \overline{NZ}$ and these are two parts of diagonal $\overline{SN}$ .

Thus if $\overline{AZ}\cong \overline{GZ}$ , one more fact will be given, then quadrilateral $SANG$ is a parallelogram.