The inside angle of a regular polygon is 140 degrees. Is the number of vertices of the polygon equal to?
| March 28, 2021 | education
The inside angle of a regular polygon is:
αn = (n – 2) * 180 / n.
Then: 140 * n = 180 * n – 360.
40 * n = 360.
n = 360/40 = 9.
Answer: A regular polygon has 9 vertices.
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