First of all, a square has four right angles. Each one measures 90 degrees.
Equation: 90*4=360 degrees
In other words, a square has 360 degrees total. A triangle on the other hand, has a total of 180 degrees (for more information).
Hopefully this answered your question....=)
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The total number of degrees depends on what kind of polygon is in question. To learn the total degrees in a convex polygon, one can use the equation (n-2)180 where n is the number of sides.
The 4 equal angles of 90 degrees within a square add up to 360 degrees
An acre has a total of 43,560 square feet. You divide the number of square feet by that and you get the number of acres. This gives you an answer of 2.5 acres.
An acre has a total of 43,560 square feet. You divide the number of square feet by that and you get the number of acres. This gives you an answer of .358 acres.
To determine the total number of degrees of any polygon, you can use the equation y=180x-360, where x is the number of sides. In your case, it would be y = 180(21) - 360, which equals 3420 degrees.