Answer:71
Explanation:
Answer: x = 68.5°
x - 20 + 21 + 42 + 29 + x + 14 + x + x - 10 = 360°
4x = 360 + 20 - 21 - 42 - 29 -14
4x = 380 - 106
4x = 274
x = 68.5°
(the exterior angles of a polygon adds up to 360 degrees)
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