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128.57 degrees
There is no such thing as a hectogon. A heptagon has 7 vertices. Each exterior angle of a regular heptagon is 360/7 degrees. So each interior angle is 180 - 360/7 = 128.57 degrees (approx).
Each interior angle of a regular 7 sided heptagon is 128.'571428' degrees recurring decimal '571428'
A Heptagon has seven sides and seven angles. In a perfect heptagon, each of the internal angles would be 128.5714286°
each measure of the angle at point h has a measure of