A four-sided shape with only 2 sides the same length is called a rhombus.
A shape with four sides and three vertices does not exist in Euclidean geometry. In Euclidean geometry, a shape must have the same number of sides as vertices. Therefore, a shape with four sides would have four vertices.
No shape has four equal sides and four different angles - either there are two pairs of equal angles, or all four angles are the same; or all sides are not the same length.
There is no four-sided shape (quadrilateral) with four equal sides where no angles are the same. The diagonally-opposing angles must be the same, and opposing sides must be parallel. The only quadrilateral that fits that description is a parallelogram.
A square
A four-sided shape with only 2 sides the same length is called a rhombus.
A shape with four sides and three vertices does not exist in Euclidean geometry. In Euclidean geometry, a shape must have the same number of sides as vertices. Therefore, a shape with four sides would have four vertices.
The shape is a square.
A kite or arrowhead.
A shape with opposite sides parallel and of the same length and four right angles is a rectangle.
A kite
No shape has four equal sides and four different angles - either there are two pairs of equal angles, or all four angles are the same; or all sides are not the same length.
In plane geometry, a shape with four sides, two of which are parallel and have the same length, cannot have a reflex angle.
A square has four equal sides and four equal angles * * * * * A square is a specific example. More generally, the shape is a REGULAR POLYGON.
A rhombus or a square or irregular polygons with 5 or more sides.
There is no four-sided shape (quadrilateral) with four equal sides where no angles are the same. The diagonally-opposing angles must be the same, and opposing sides must be parallel. The only quadrilateral that fits that description is a parallelogram.
A square