Q: How many acute angles in a regular octagon?

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It depends whether its regular or irregular.

A regular 8 sided octagon has no acute angles but has 8 equal obtuse angle of 135 degrees that add up to 1080 degrees

8 if it's an regular octagon

An regular 8 sided octagon has no right angles unless it is shaped into an irregular octagon.

A regular octagon has 8 interior obtuse angles.

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8 angles

It depends whether its regular or irregular.

it has no acute angles

A regular 8 sided octagon has no acute angles but has 8 equal obtuse angle of 135 degrees that add up to 1080 degrees

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.

Whether it is a regular or irregular octagon does not matter. An octagon is, by definition, a 2-dimensional figure with eight sides, and therefore with eight angles. A regular octagon will have eight equal angles and an irregular octagon will have eight angles some of which are not equal to the others.

8 if it's an regular octagon

An regular 8 sided octagon has no right angles unless it is shaped into an irregular octagon.

8

A regular octagon has 8 interior obtuse angles.

None.

Whether or not a polygon is regular makes no difference to the number of sides or angles that it contains. An octagon has eight sides and eight angles.