Draw a diagonal to divide it into two triangles; find the area of each triangle and add the answers.
If a shape has equal angles and side lengths then it is known as a regular polygon
Rectangle.
Measure any side, as a square has four equal sides
square
a four side figure with equal measure of all sides
Multiply one side by 4, ie. a square has four equal sides measure one side and mutiply by four.
If a square has four sides, each of length four feet, the perimeter of the shape is equal to 4 x 4 = 16 feet.
A rhombus is a four sided shape where all sides are equal length and opposite sides are parallel.
QUADRILATERAL its spelled right.
The shape that has not got equal side is a rectangle
A two-dimensional shape with one curved side and four straight sides can be created, but there is not specific name for such a shape.
A rhombus is any four-sided shape where all four sides are of equal length. A square has four sides. Each angle needs to be a right angle, a 90o angle, or else it will look skewed. If a side is longer than another side, it will look either skewed or like a rectangle. So, a square is any four-sided shape that has sides of equal length, which makes it a rhombus according to the definition above. Not all rhombuses are square - because their sides are equal but not their angles - but all squares are rhombuses.