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It can be proven that the sum of all the internal angles of a polygon with n sides is (n-2)*180 degrees.

In the case of a square, n = 4 and so the angles sum to (4-2)*180 = 2*180 = 360 degrees.

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Q: Why do all the internal angles of a square equal 360 degrees?
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Does a quadrilateral with four equal sides have to be a square?

NO!!! It can be a Rhombus. Square ' 4 equal sides and four angles at 90 degrees. Rhombus' 4 equal sides, but no angles at 90 degrees.


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Are the angles of a rhombus all equal?

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What quadrilateral has 2 sets of parallel sides of equal length?

A square has 3 sets of parallel sides of equal length AND all the angles are 90 degrees. A rhombus has 2 sets of parallel lines of equal length, but the angles aren't all 90 degrees.


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Related questions

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The external angles will. The internal angles will equal 540o.


Is every rectangle with four sides a square?

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How many degrees are the angles of a square?

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Squares are made up of what type of angles?

Squares are made up of four ninety degree angles. Another term for these angles are called square angles. These four internal angles make up a square which also has four equal sides. When you add up the degrees of the angles the total is three hundred and sixty degrees.


Does a quadrilateral with four equal sides have to be a square?

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What shape has the sum of its angles equal 720 degrees?

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Why is a rectangle a square?

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Does a parallelogram have all sides the same?

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Is a square an equiangular?

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What is the classification or triangles by side and angles?

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