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(number of sides -2)*180 = sum of interior angles

Q: How many interior angles does a many sided polygon have?

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A 10 sided decagon polygon has 10 interior angles that add up to 1440 degrees.

A 13 sided polygon also called a triskaidecagon or tridecaogn has a total 1980 degrees for its interior angles.

30 sides

A heptagon is a seven-sided polygon. It has seven interior angles. If it is a Regular polygon, each interior angle measures approximately 128.57 degrees, to a total of 900 degrees.

A heptagon is a 7 sided polygon whose 7 interior angles add up to 900 degrees.

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A 10 sided decagon polygon has 10 interior angles that add up to 1440 degrees.

A 10 sided decagon polygon has 10 interior angles that add up to 1440 degrees.

A 13 sided polygon also called a triskaidecagon or tridecaogn has a total 1980 degrees for its interior angles.

The interior angles of a fifteen sided polygon amount to 2340 degrees.

The interior angles of a 13 sided polygon add up to 1980 degrees

30 sides

A 9 sided nonagon has 9 interior angles that add up to 1260 degrees

There are 20 interior angles and they add up to 3240 degrees

A heptagon is a seven-sided polygon. It has seven interior angles. If it is a Regular polygon, each interior angle measures approximately 128.57 degrees, to a total of 900 degrees.

A pentagon (five sided regular polygon) has interior angles of 108°.

The interior angles of an 11 sided polygon add up to 1620 degrees

The interior angles add up to 17640 degrees