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 A convex, 11-sided polygon can have at most how many acute interior angles?
 

Guest Aug 2, 2017
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A convex, 11-sides polygon (known as a hendecagon) may only have, at most, 3 acute interior angles.

 

This is because each acute angle results in an exterior angle that is greater than 90 degrees. If you were to add a fourth exterior angle, the sum of all the exterior angles will be greater than 360 degrees. Of course, the sum of all the exterior angles in a convex polygon must be equal to 360, so if the sum of all are greater than this number, you can cannot create a convex polygon. 

TheXSquaredFactor  Aug 2, 2017

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