Answer:
x = 18
Step-by-step explanation:
x° + 8x° + x° = 180° (Linear pair angles)
10x° = 180°
x° = 180°/10
x° = 18°
x = 18
The total of the internal angles in a tetradecagon is 2160.
2160 - 2012 = 148
The remaining angle must be 148 degrees.
3.2 is 16% of 20 you turn 20 into a decimal and multiply 3.2 by .20 and get the answer
X=10 let me know if you need the work