Posted by Anna on Saturday, January 15, 2011 at 5:57pm.
How much WHAT does a four-sided polygon equal?
How many degrees, like a triangle equals 180 degrees
http://www.mathsisfun.com/geometry/interior-angles-polygons.html
The sum of the internal angles of any four-sided polygon (which is also called a quadrilateral) is 360 degrees.
Sum of measures of interior angles of a polygon of n sides = (n - 2 )*180 deg
polygon with 4 sides,
n = 4
(n - 2)*180
(4 - 2)*180
2*180 = 360
Thank You guys soo much :))
You're welcome.
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