It depends on what x is.
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An acute angle
17
Between 15 and 20 degrees...
An acute angle is an angle less than 90°. So an angle of 17° is an acute angle.
The regular polygon has 36 sides. Check: Exterior angle=360/36=10 degrees Interior angle=34*180/36=170 degrees. 170 is 17 times larger than 10 so 36 sides is the correct answer. Method: 180n-360=17*180 180n=6480 n=36