Question

http://prntscr.com/67q44c

Answer 1

Do you agree that a triangle has an interior angle sum of 180 degrees?

Answer 2

yesss

Answer 3

ok, divide those figures into triangles

Answer 4

Do you agree that a octogon has an interior angle of 180 degrees

Answer 5

nicole @matlee

Answer 6

Hi!

Answer 7

hi

Answer 8

Now you have two triangles, each triangle is 180 degrees.

Answer 9

so quadriletaral sum up yo 360
triangle to 180 anytime the formula to find sum of angles is 180*(n-2) where n is number of sides

Answer 10

????

Answer 11

a quadrilateral is composed of two triangles (if you cut along the diagonal).
Each triangle has 180 degrees.
So the total interior angle for the quadrilateral will be 2*180

Answer 12

challenge, find the interior angle sum for the octagon. (hint, divide the octagon into triangles).