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1. sum of the interior angles: 1260 degrees
2. sum of the interior angles: 1800 degrees


1 Sum Of The Interior Angles 1260 Degrees 2 Sum Of The Interior Angles 1800 Degrees class=

Sagot :

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1. 180(n-2) = 1260

n-2 = 7

n=9

Each interior angle is 1260/9 = 140°.

The sum of the interior angle and its corresponding exterior angle is 180°.

Each exterior angle must be 180°- 140° = 40°.

2. The sum of the interior angles, in degrees, of a regular polygon is given by the formula 180(n – 2), where n is the number of sides. The problem concerns a polygon with twelve sides, so we will let n = 12. The sum of the interior angles in this polygon would be 180(12 – 2) = 180(10) = 1800.

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