It simply depends of the length and proportions of the diamond. You have to know the sides of it to determine the angles. ;)
Its a diamond :]
Rhombus
A square is a type of rectangle where all four sides have equal length. A diamond has four sides of equal length but differs from a square in that not all four internal angles are equal. A diamond is neither a rectangle, and hence neither a square.
RHOMBUS
when you say equal sides, if you mean by the length of each side, then yes
The name for a three-dimensional diamond shape is a "diamond." In geometry, a diamond is a type of parallelogram with four sides of equal length forming two pairs of congruent angles. It is also known as a rhombus, with all sides equal in length but with the angles not necessarily right angles.
A diamond can be described mathematically as a rhombus, a quadrilateral with all sides equal in length.
A rhombus. (Looks like a diamond.)
a square, altough to get it to look like a "diamond" you would have to look at it diagonally.
there are 50 right angles on a baseball field.
A kite is a quadrilateral with two pairs of adjacent sides that are equal in length, while a diamond is a rhombus where all four sides are equal in length. In other words, all diamonds are kites, but not all kites are diamonds.