Gestation or the length of pregnancy of a cat averages 64 days. It is generally between 62 and 67 days or about nine or ten weeks. When litters are large, length is often less. When litters are small, the length of the pregnancy may increase.
The sum of the interior angles of an octagon is 1080 degrees. In a regular octagon, divide by 8 for each angle = 135Â°. The formula for this is Sum = 180 (n-2) where n is the number of sides. (or 180n - 360) You can take the polygon and make [N] triangles, with points touching at the 'center'.
The sum of the measures of the interior angles of a convex polygon with n sides is $ (n-2)180^{\circ} $ Examples: Triangle or ( '3-gon') sum of interior angles: $$ (\red 3-2) 180 = 180^{\circ} $$ Quadrilateral which has four sides ( ' 4-gon') sum of interior angles: $$ (\red 4-2) 180 = 360^{\circ} $$ Hexagon which has six sides ( '6-gon')