undecagon has 11 sides. is the answer nine?
2006-07-22 18:00:42 · 7 answers · asked by ameliawht 2 in Science & Mathematics ➔ Mathematics
ok. an undecagon has 11 sides, but it is also concave, not convex, therefore it cannot have 11 interior angles because only nine of them lie inside of the polygon, 2 lie outside. YES, 9 is the answer.
2006-07-22 18:08:29 · update #1
By definition interior angle of a polygon lies inside the shape, so it does not matter whether it is concave or convex.
Convex undecagons exist...
The answer is 11 -- no matter what the angles are!
2006-07-22 20:59:58 · answer #1 · answered by dutch_prof 4 · 7⤊ 0⤋
well, a triangle has 3 sides and three interior angles, right?
a square has 4 sides, and 4 interior angles, doesn't it?
a pentagon has 5 sides and 5 interior angles
a hexagon.....you see where I'm going with this?
draw them, count them
2006-07-22 18:05:11 · answer #2 · answered by enginerd 6 · 0⤊ 0⤋
use the ms word to check on the meaning of "undecagon", click "all reference book" & the answer shown up...
2006-07-22 18:26:32 · answer #3 · answered by kohf1driver 2 · 0⤊ 0⤋
I thot 22
2006-07-22 18:02:47 · answer #4 · answered by Anonymous · 0⤊ 0⤋
you are asking a long string of related problems based on angles of polygons.
Are you asking so that Yahoo answers is doing your homework for you?
2006-07-22 18:11:46 · answer #5 · answered by Curly 6 · 0⤊ 0⤋
11
Even if it's concave, interior means inside the polygon. (I think)
2006-07-22 19:02:29 · answer #6 · answered by Chie 5 · 0⤊ 0⤋
i think its 11
2006-07-22 20:30:07 · answer #7 · answered by edmund372 2 · 0⤊ 0⤋