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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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.
No, only in a square (regular parallelogram).The opposite angles are EQUAL in a parallelogram, and the adjacent angles are SUPPLEMENTARY(they equal 180 degrees).So if any angle in a parallelogram is a right angle, they all are. Otherwise, there are no right angles.The angles of a parallelogram will average 90 degrees, as there are 360 degrees in any quadrilateral, (360/4 - 90) and 180 degrees in two adjacent non-equal angles (180/2 = 90).
A rhombus looks like a lopsided square, or a diamond shape. It is a parallelogram with four equal sides. The angles of a rhombus do not all need to be equal BUT opposite angles of a rhombus ARE equal. If you were to "straighten it up" and make all the angles equal at right angles, it would be a square. A rhombus with four right angles is a square.
It will have 2 opposite equal angles of 33 degrees and 2 opposite equal angles of 147 degrees
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.