In what type of regular polygon is each interior angle equal to 168°?

Question

amistre64 · Answer

an interior angle is the sum of two adjacent base angles of an iso triangle.

180 - 168 = the measure of its central angle

amistre64 · Answer

the central angle is a portion of the whole circle; and when we divide 360 by the central angle it tells us how many sides we got

amistre64 · Answer

if me head is on straight, i get a central angle of 12; and 360/12 = the number of sides

anonymous · Answer

Exterior is 12, 360/12

anonymous · Answer

Exterior angles sum to 360.

amistre64 · Answer

is exterior the sweep of the outside corner?  or the sweep made by the supplement to the interior?

anonymous · Answer

12 +168 =180

anonymous · Answer

Actually it is true for any convex polygon, not just regular ones.

amistre64 · Answer

http://mathworld.wolfram.com/ExteriorAngle.html

anonymous · Answer

My bad terminology:-( Answer is right though...

amistre64 · Answer

yes, answer is right :)

anonymous · Answer

http://en.wikipedia.org/wiki/Polygon says exterior is the way I had it. We all know Wikipedia is unreliable, though:-)

anonymous · Answer

Actually, searching around, it is Wolfram's definition that is at variance with most other sources, so I think I will stick to my terminology after all:-)