Chapter 14, Problem 1MCE

To determine

To choose : the correct option.

Answer to Problem 1MCE

The correct option is (d) $144$ .

Explanation of Solution

Given information : The measure of an interior angle of a regular decagon.

Decagon has ten sides.

Measure of each $n$ -sides:

  $\begin{array}{l}{180}^{\circ }-\frac{{360}^{\circ }}{n}\\ n=10\\ \Rightarrow {180}^{\circ }-\frac{{360}^{\circ }}{10}\\ \Rightarrow 180-36\\ \Rightarrow 144\end{array}$