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There's a really handy little formula. The total number of degrees in a polygon (the sum of the interior angles) is equal to (2n-4) right angles or (2n-4)x90 degrees.

So for an octagon, the sum of the interior angles is 2x8-4 right angles = 16-4 right angles = 12 right angles or 12x90 degrees = 1080 degrees. To find one angle, divide this by 8 and you get 135 degrees.

Q: How do you find the angle in a regular octagon?

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Each exterior angle of a regular octagon measures 45 degrees

Each interior angle of an 8 sided regular octagon is 135 degrees and each exterior angle is 45 degrees

135 Each interior angle of a regular octagon measures 135 degrees.

Each interior angle of a regular 8 sided octagon measures 135 degrees

Providing that it is a regular octagon then each interior angle will measure 135 degrees

Related questions

Each exterior angle of a regular octagon measures 45 degrees

Each interior angle of an 8 sided regular octagon is 135 degrees and each exterior angle is 45 degrees

135 Each interior angle of a regular octagon measures 135 degrees.

An interior angle of a regular octagon is 45 degrees. The exterior angles measure 315 degrees.

135 Each interior angle of a regular octagon measures 135 degrees.

Each interior angle of a regular 8 sided octagon measures 135 degrees

For a regular octagon it is 1080

135

Each exterior angle of a regular octagon: 360/8 = 45 degrees

Each interior angle of a regular 8 sided octagon measures 135 degrees

Providing that it is a regular octagon then each interior angle will measure 135 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.