Explanation:
What is the measure of an interior angle in a regular hexagon? 
 720/6 = 120
Answer
120° 
2.What is the sum of the angle measures in a 14-gon? 
 180 * (n - 2) in this case n = 14
so 180 * (12) = 2160
Answer
2,160° 
3. In a right triangle, the measure of one acute angle is 71°. What is the measure of the other acute angle? 
 90 - 71 = 19
Answer
19° 
4.Which quadrilaterals always have both line symmetry and rotational symmetry? 
 Answer
square