All interior angles equal to 180 just add the two angles you have and subtract it from 180 to get the final angle
Answer:
15inch
Step-by-step explanation:
X^2=8^2+7^2
The measurement are the same. From 2,4,6,8. After you known those equal to 103. You know a line equals 180. So you would do 180-103=77. So from 1,3,5,7 will all be 77 degree.
