Q: How do you work out the exterior angle?

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It is: 180-interior angle = exterior angle

With a regular polygon: 360/exterior angle = number of sides

Interior and adjacent exterior angles form a straight line so exterior angle = 180 - interior angle. If you are satisfied with this reply please consider awarding a Recommended Point to the responder.

The sum of the exterior angles in any polygon is 360 degrees. A nonagon has 9 sides, so to work out a single exterior angle, we divide 360 by 9, which is 40.

Each exterior angle 45 degrees Each interior angle 135 degrees

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It is: 180-interior angle = exterior angle

You cannot. An exterior angle of a decagon can have any value.

With a regular polygon: 360/exterior angle = number of sides

If the polygon has n sides (or vertices) each exterior angle is 360/n. Each interior angle = 180 - exterior angle = 180 - 360/n

Exterior angle+interior angle=180 degrees and 180-exterior angle=interior angle

Interior and adjacent exterior angles form a straight line so exterior angle = 180 - interior angle. If you are satisfied with this reply please consider awarding a Recommended Point to the responder.

The sum of the exterior angles in any polygon is 360 degrees. A nonagon has 9 sides, so to work out a single exterior angle, we divide 360 by 9, which is 40.

It is: 180-interior angle = exterior angle

It is: 180-interior angle = exterior angle

Each exterior angle 45 degrees Each interior angle 135 degrees

the hypotenuse is the exterior angle

When any side of triangle is extended outwards then exterior angle is formed. Sum of this exterior angle and adjacent interior angle = 180o. If exterior angle = 180o(straight angle) then interior adjacent angle is 0o which is not possible. So exterior angle can't be straight angle.