Find to the nearest degree the size of each angle of a regular heptagon (seven sides)

the 7 angles add up to 5*180 = 900

so each is 900/7

each external angle is ... 360º / 7

internal angle = 180º - (360º / 7)

To find the size of each angle of a regular heptagon, we can use the formula:

Angle = (n-2) * 180 / n

where "n" is the number of sides of the polygon.

In this case, we have a regular heptagon with seven sides, so:

Angle = (7-2) * 180 / 7
Angle = 5 * 180 / 7
Angle = 900 / 7
Angle ≈ 128.57

Therefore, each angle of the regular heptagon is approximately 128.57 degrees.