Here is a regular pentagon.
Calculate the size of the interior angle marked $c$ .
to tastix
Watch video
Answer >

Answer

Expert–verified

Hide Steps

Answer

$size of interior angle = \frac{sum of interior angles}{n}$

Steps

Step 1 ： $n = 5$

Step 2 ： $sum of interior angles = (n - 2) \times 180 \degree$

Step 3 ： $size of interior angle = \frac{sum of interior angles}{n}$