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The interior angles of a triangle add up to 180 degrees. Every time you add an angle, you add another 180 degrees (mark a point on a side of a polygon and call it a straight angle; that is not exactly a proof but it makes it reasonable that it is true). So the total is 180 times 2 less than the number of sides.
What else can I help you with?
Do the angles of a polygon have to add to 360 degrees?
The exterior angles of a polygon add up to 360 degrees.
How many degrees are there in a 19 sided polygon?
The degrees in a 19 sided polygon add up to 3,060 degrees
What polygon has 2340 degrees?
A polygon of 15 sides has interior angles that add up to 2340 degrees.
What polygon has 1980 degrees?
The interior angles of a 13 sided polygon add up to 1980 degrees
A polygon whose angle measurement add up to 360 degrees?
what polygon has angle measures that add up to 360
What do the angles in a outside any polygon add up to?
The exterior angles of any polygon add up to 360 degrees.
How much degrees does a 8 sided polygon have?
Interior degrees add up to 1080 degrees Exterior degrees add up to 360 degrees
What polygon has a measurement of 360 degrees?
The 4 interior angles of 4 sided quadrilaterals add up to 360 degrees The exterior angles of any polygon add up to 360 degrees
How many degrees does a 6 side polygon add up to?
Exterior angles add up to 360 degrees Interior angles add up to 720 degrees.
What polygon measures 1980 degrees?
A 13 sided polygon interior angles add up to 1980 degrees
What do the angles of a seven sided polygon add up to?
The interior angles of a 7 sided polygon add up to 900 degrees
What is the measures of a polygon with n sides is 1260?
The interior angles of a 1260 sided polygon add up to 226,440 degrees and its exterior angles add up to 360 degrees
