The interior angles of a 9-agon add up to (9 -2)*180° = 1260°. The sum of the given angles is
.. 1139° +x° = 1260°
.. x = 1260 -1139 = 121
The missing angle measure is 121°.
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The supplement of each interior angle is its corresponding exterior angle. The sum of exterior angles of any convex polygon is always 360°. Another way to approach this problem is to add the exterior angles.
Answer:
ax+16=b−3x
Step-by-step explanation:
Answer:
The simplified answer is 7w - 12.
Step-by-step explanation:
-1(w+4) + 2(4w-4)
(-w -4) + (8w - 8)
7w - 12
