3
It could be an arrowhead (delta) or a kite.
A rhombus has all sides equal and opposite sides parallel. This includes a square which is a special case of a rhombus with all angles equal (90 degrees) as well. If opposirte sides are equal but not all sides are equal, it is a parallelogram
parallelogram
Yes.
An equilateral shape would have equal and opposite sides.
A kite or arrowhead.
Yes
it can be in any shape with even number of sides.
Rectangle
The word "opposite" is not particularly helpful.The shape could be:A lop-sided kite or arrowhead, with one pair of equal sides and one pair of unequal ones;An isosceles trapezium (where the bases are different from the slanted sides);A non-isosceles trapezium where one of the bases is equal to one of the slanted sides.It could, of course, be a polygon with more than 4 sides.
A parallelogram is a four sided shape where opposite sides are parallel and equal lengths. If you mean that ALL sides are equal lengths, you are looking for a rhombus.
It could be an arrowhead or a kite.
This just means that opposite sides in a shape (sides that 'look' at each other) are of equal lengths.
an perticulogram
circle
square + rectangle