The sum of the interior angles of any regular polygon of n sides is equal to 180(n - 2) degrees.
1080 degrees
If regular, 8. (4 pairs)
A regular octagon has eight equal angles. An irregular octagon need not have any equal angles, although it may have some.
On a regular polygon (the octagon that was represented to you in grade 2), its usually 45 degrees. Although, an octagon is any polygon with eight sides so it doesn't have to be regular, it can be any shape with sides. So it may be different for your octagon.
An 8 sided octagon can be either regular or irregular in shape.
There is insufficient information to answer the question. There is no indication that the octagon is regular and therefore, you may not assume that it is. Even it you were told that it is a regular octagon, there is still insufficient information: the answer will depend on what the 17.25 inch is a measure of - the diagonal of the octagon or its height (width).
Assuming that the question refers to an octagon (not an otagon), the answer is that an octagon is a polygon but it may or may not be regular.
A regular octagon has 8 sides.
If regular, 8. (4 pairs)
A regular octagon has eight equal angles. An irregular octagon need not have any equal angles, although it may have some.
On a regular polygon (the octagon that was represented to you in grade 2), its usually 45 degrees. Although, an octagon is any polygon with eight sides so it doesn't have to be regular, it can be any shape with sides. So it may be different for your octagon.
An 8 sided octagon can be either regular or irregular in shape.
There is insufficient information to answer the question. There is no indication that the octagon is regular and therefore, you may not assume that it is. Even it you were told that it is a regular octagon, there is still insufficient information: the answer will depend on what the 17.25 inch is a measure of - the diagonal of the octagon or its height (width).
A polygon with eight sides, regular or not, is an octagon. There isn't a special name for a regular octagon (other than "regular octagon").
A regular octagon has 8 sides similarly to an octagon. The name regular octagon means that all angles are the same, therefore inferring that all sides are of equal length.
The perimeter of an octagon is 64 only if it is a regular octagon and the length of one side is 8. An irregular octagon may or may not have a perimeter of 64 (whatever units of measure you choose to use) depending on what the lengths of the individual sides are.
A octagon is a octagon without the same angles as the others.
In a regular octagon, each angle is 135 degrees. If the octagon is not regular, then it can have as many as 6 right angles in it.