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In a general decagon an interior angle can have any value in the range (0, 360) degrees - excluding 180 degrees. The only constraint is that the sum of all interior angles must be 1440 degrees.

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8y ago
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12y ago

In a regular decagon (where the sides are all equal) the interior angles are 144°.

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Q: What is the size of 1 interior angle in a decagon?
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What is the size of each interior angle of a regular polygon that has 27 diagonals?

13 1/3 °


What is the measures of the angles in a decagon?

The total number of degrees in any regular polygon is calculated by (S-2) * 180º, where S = the number of sides. So, for a decagon the total is 8 * 180º = 1440º, and the measure of each interior angle is 144º, or 1/10th of the total. The last bit is correct only if the decagon is regular. It need not be.


Is it true that the sum of interior angle and 1 exterior angle is always equal to 180?

Yes: 1 interior angle plus 1 exterior angle = 180 degrees


What is the messurement of 1 interior angle in a nonogone?

It can be any size at all, between zero and 360 degrees.If the nonagon is regular, then the angle measures 140 degrees.


What is the measure of 1 interior angle of a regular 18 sided ploygon?

Each interior angle measures 160 degrees


Can a triangle have to right angles if yes what would be the size of the third angle?

A right angle triangle can only have 1 right angle of 90 degrees and its 3 interior angles add up to 180 degrees


If a triangle has only 1 acute angle what type of triangle is it?

If you mean 1 acute interior angle, then it's a logical and geometric impossibility.A triangle can't have only one acute interior angle.


What is the size of each interior angle of a regular polygon with 28 sides?

The easiest way to calculate this is to calculate the exterior angle and use the fact that the exterior and interior angles are supplementary. Sum exterior angles = 360° → Each exterior angle of a regular 28-agon is 360° ÷ 28 → Each interior angle of a regular 28-agon = 180° - 360° ÷ 28 = 167 1/7° ≈ 167.14°


What is the size of each interior angle of a regular polygon with 30 sides?

Method 1: EXterior angle of any n-sided polygon = 360/n, in this case 12 so INterior angle is 180 - 12 ie 168o Method 2: Interior angle of any n-sided polygon = ((2n - 4 ) x 90)/n which is (56 x 90)/30 ie 168o.


How do you calculate each interior angle of a regular decagon with a explanation?

There are two formulae which can be used for this: 1: As the exterior angles of a regular n-sided polygon are 360/n degrees, the interior angle is 180 less this value; 2: The total of the interior angles of any n-sided polygon is (2n - 4) right angles so in a regular polygon each angle is that value divided by n. In your example n = 10, so by method 1 exterior angles are 36 degrees making the interior angles therefore 144 degrees; By method 2 the total of the interior angles is 16 x 90 ie 1440 degrees, making each angle 1440/10 ie 144 degrees!


Which are remote interior angles of angle 1?

/_3 and /_ 2


What is 1 interior angle of a 11-gon?

Assuming regular figure: Exterior angle = 360/11 = 32.73 degrees so interior angle = 180 - 32.73 which is 147.27 degrees