It is a square or a rectangle both of which have 4 interior 90 degree angles
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A quadrangle has any four sided shape and quadrilateral has all same angles and there all same sizes
No, because a quadrilateral can be many different sizes and lengths as a quadrilateral is any shape with only 4 sides. The sum of all the angles in a quadrilateral equal 360 degrees.
quadrilateral means having all sides the same length. when you make a shape with 3 obtuse angles and with the same length on the sides, only 3 of them will have the same length which is the sides of the 3 obtuse angles. then the last side will be too long. obviously it is no more quadrilateral.
A square has all 4 sides the same length and its angles measure the same as well. A rhombus has all 4 sides the same length as well and the angles measure the same as well too.
Diagonally opposite pairs of angles will always be equal, but the only time all angles in a quadrilateral parallelogram are equal is when that shape is a rectangle.