Question

HELP !



Which of the following best describes this polygon?

concave octagon

concave decagon

convex octagon

convex decagon

Answer 1

its b or d not shur...

Answer 2

good, i'm getting 10 sides too

so its a decagon

Answer 3

are there any interior angles that are greater than 180 degrees?

Answer 4

yes its greater than 180

Answer 5

which interior angle

Answer 6

wait they would all equal 360 rite ?

Answer 7

here is what an interior angle looks like



I didn't feel like drawing a decagon, but the same idea applies

Answer 8

its any angle where it's on the inside of a polygon

Answer 9

yes i See theres 6 rite ?

Answer 10

well that's just my example (and my laziness in not wanting to draw 10 sides lol)

Answer 11

in the case of a decagon, there are 10 interior angles

Answer 12

decagon = 10 sides and 10 interior angles

Answer 13

lol iGet tht but did i get the example right ?

Answer 14

yes you did

Answer 15

so looking at the decagon, are there any interior angles that are greater than 180 degrees?

Answer 16

no there not equal as ilook

Answer 17

but are any larger than 180 degrees?

Answer 18

they all are

Answer 19

here is an angle that is less than 180 degrees



here is one that is greater than 180 degrees

Answer 20

IF you had something like this

Answer 21

then this interior angle



is larger than 180 degrees

which would make this polygon in this example concave