Question

please help ASAP please!!

1. what is the sum of the measures of the interior angles of a convex 11-gon
2.what is the measure of each interior angle of a regular decagon?
@Directrix

Answer 1

@Zarkon

Answer 2

@rosedewittbukater

Answer 3

@ Loser66

Answer 4

@Loser66

Answer 5

@rosedewittbukater please help me i need help

Answer 6

http://www.algebra.com/algebra/homework/Polygons/Polygons.faq.question.278782.html

Answer 7

(number of sides - 2) x 180
(11 - 2) x 180
9 x 180
1620

Answer 8

So for the decagon use the same formula, then divide by the number of sides. Does that make sense?

Answer 9

thank you so much!

Answer 10

No problem!

Answer 11

A decagon has 10 sides by the way :)

Answer 12

yeah haha

Answer 13

As rosedewittbukater said the
sum of the angles = (number of sides -2) * 180
so for an 11-gon, the sum of the angles is (11 -2) * 180
= 1,620°
Here's a handy calculator to find interior angle sum and lots more info about all kinds of polygons:
http://1728.org/polygon.htm