## Which polygon has an interior angle sum of 1260 degrees?

a nonagon
So, the sum of the interior angles of a nonagon is 1260 degrees. All sides are the same length (congruent) and all interior angles are the same size (congruent).

## What is the sum of the angles of a 12 sided polygon 12?

1800°
Dodecagon is a 12-sided polygon with 12 angles and 12 vertices. The sum of the interior angles of a dodecagon is 1800°.

## How many sides does a regular polygon have if each interior angle has a measure of 108 degrees?

5 sided
An interior angle of a regular polygon has a measure of 108°. It is a 5 sided polygon known as pentagon.

## How many sides does a polygon have if the sum of the interior angles is 2340?

15 sides
If the sum of the measures of the interior angles of a polygon is 2340°, how many sides does the polygon have? Use the equation “sum of interior angles = (n – 2)180º ” to write an equation and solve for n. The solution is shown at right. Since n = 15, the polygon has 15 sides.

## What is the sum of the interior angles of a polygon with I 12 sides and II 25 sides?

Thus, the sum of all the interior angles of a polygon is equaled to 1800 degrees.

## What polygon has an interior sum of 2340?

15 sided
Here sum of interior angels is 2340 degrees. Therefore, the polygon is 15 sided.

## How many sides does a 540 degree polygon have?

5 sides
If the sum of the interior angles of a polygon is 540 degrees, the polygon has 5 sides.

## What polygon has 15 sides?

In geometry, a pentadecagon or pentakaidecagon or 15-gon is a fifteen-sided polygon.

Type Regular polygon
Edges and vertices 15
Schläfli symbol {15}

## What is the sum of 3 of the interior angles of a regular pentagon?

540°
The General Rule
Shape Sides Sum of Interior Angles
Triangle 3 180°
Pentagon 5 540°
Hexagon 6 720°

## How much degrees is a Nonagon?

Nonagon
Regular enneagon (nonagon)
Coxeter–Dynkin diagrams
Symmetry group Dihedral (D9), order 2×9
Internal angle (degrees) 140°
Properties Convex, cyclic, equilateral, isogonal, isotoxal

## How many sides does a polygon have with an interior angle of 1080?

eight sides
The sum of the interior angles in a regular polygon is given by the formula 180(n – 2), where n is the number of sides in the polygon. An octagon has eight sides, so the sum of the angles of the octagon is 180(8 – 2) = 180(6) = 1080 degrees. Because the octagon is regular, all of its sides and angles are congruent.

## Why is the sum of the interior angles of a pentagon 540?

Why is this? This is because you can make any pentagon with three triangles. Remember, the 3 angles of any triangle always add up to 180 degrees. So if you have three triangles making up your pentagon, then your angles will always add up to 540 degrees (3 * 180 degrees).

## What is interior angle of pentagon?

108°
Pentagon/Internal angle

## Which polygon has interior angles whose sum is 1440?

decagon
The sum of the measures of the interior angles of a decagon (10 sided polygon) is 1,440. We found this by using the formula (n-2)(180). Thus, to find the measure of each interior angle we simply divide the sum by the number of total sides in the polygon.

## How do I find the sum of the interior angles of a polygon?

The formula for finding the sum of the measure of the interior angles is (n – 2) * 180. To find the measure of one interior angle, we take that formula and divide by the number of sides n: (n – 2) * 180 / n.

## How do you find interior angles of a polygon?

The formula for calculating the sum of interior angles is ( n − 2 ) × 180 ∘ where is the number of sides. All the interior angles in a regular polygon are equal. The formula for calculating the size of an interior angle is: interior angle of a polygon = sum of interior angles ÷ number of sides.

## What is the sum of the interior angles of a?

Sum of Interior Angles in a Polygon

The interior angles in a regular polygon are always equal to each other. Therefore, to find the sum of the interior angles of a polygon, we use the formula: Sum of interior angles = (n − 2) × 180° where ‘n’ = the number of sides of a polygon.

## What is the name of polygon with the sum of Angle 540?

Pentagon
Types of Pentagon
Shape Sides Sum of Interior Angles
Pentagon 5 sides 540 degrees
Hexagon 6 sides 720 degrees
Heptagon ( or Septagon) 7 sides 900 degrees
Octagon 8 sides 1080 degrees

## What polygon has 1800 degrees?

dodecagon
So, the sum of the interior angles of a dodecagon is 1800 degrees. All sides are the same length (congruent) and all interior angles are the same size (congruent). To find the measure of the angles, we know that the sum of all the angles is 1800 degrees (from above)…

## What polygon has a sum of 900 degrees?

a heptagon
So, the sum of the interior angles of a heptagon is 900 degrees. All sides are the same length (congruent) and all interior angles are the same size (congruent).

## Do interior angles add up to 180?

One of the first things we all learned about triangles is that the sum of the interior angles is 180 degrees.