A rectangle has four right angles. A square also has 4 right angles, but it is a only a square and not a rectangle if all of the sides are congruent.
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A shape that has four straight sides and four angles is defined as a quadrilateral. If all four angles are right angles, it is a rectangle, and if all four sides are congruent, it is a square.
A quadrilateral is any linear shape which contains four straight lines connected at four angles. the total degrees found within the angles total 360 degrees.A regular quadrilateral is a square : all four sides have equal lengths and all four angles are equal, thereby right angles of 90° each.
A regular quadrilateral. A plane shape with four sides which are equal in length and which meet at right angles.
All four of the interior angles of a quadrilateral add up to 360 degrees.
Rhombus This is called a rhombus. it can have right angles but doesn't have to. all it has to have is four equal sides. So, a square is under this category. Here is the definition of a rhombus: RHOMBUS: a quadrilateral with four equal sides