The interior angles of an n-sided polygon add to (n-2)*180 degrees.
So the interior angles of a 20-gon add to 18*180 = 3240 degrees.
The 20-gon is regular so each angle is a 20th of this ie 3240/20 = 162 deg.
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The largest exterior angle measure is 120o. It is the exterior measure of an equilateral triangle (which is a regular polygon).
51º per interior angle
How many sides does a regular polygon have if the measure of each interior angle is equal to 172 degress ?
Providing that it is a regular polygon then each interior angle will measure 160 degrees
No regular polygon has 160. The "smallest" polygon is the triangle, which has 180o. ^^FALSE!!!!!!! this polygon has 18 sides!