In each interior angle: 128o 34' 17.14''
Each interior angle measures 128.57 degrees rounded
A seven sided polygon is a heptagon. The fact that it is regular means that all its sides are of the same length. All its angles are of the same measure = 128.57 or 128 4/7 degrees.
A heptagon is a seven-sided polygon. It has seven interior angles. If it is a Regular polygon, each interior angle measures approximately 128.57 degrees, to a total of 900 degrees.
A formula for this question is that the total measure of the interior angles of a polygon is 180 degrees multiplied by 2 less than the number of sides. For a seven sided polygon, this formula yields 180 X 5 = 900 degrees.
The sum of the exterior angles of any n-sided regular polygon, including a seven-sided polygon, is 360 degrees.
Ancient Greek "hepta" = seven, "gonia" = angle. It is a polygon with seven angles (vertices).
It is the sum of its 7 equal sides.
A sectagon is not a shape. I think you mean SEPTagon, which is a seven-sided polygon. It may or may not be regular. A regular polygon has all sides congruent and all angles congruent.
A regular heptagon is a polygon, or closed figure, with seven sides of the same length.