Question

Can someone please help me find the sum of each interior angle measure of the polygon, and can you please explain. I need help on both of these questions.

Answer 1

3. 1080°

4. 900°

You can easily find the sum of interior angles by this equation: (n-2)180°

N=The number of sides of the polygon

So, in picture 3, the polygon has 8 sides. If we substitute this value into the equation, (8-2)180= 1080° !

The same in picture 4, with 7 sides, (7-2)180= 900°

have a nice day!