A trapezoid - see related link for an example.
If both pairs of opposite sides are the same length, and both pairs of opposite angles are the same, the quadrilateral is a parallelogram (rhombus, rectangle, or square).
A pentagon maybe even A polygon
(1) Opposite sides are the same length and (2) All four corners are right-angles.
The description fits a square or a rhombus. In a square, all sides are of equal length, opposite sides are parallel, and all angles are equal (90 degrees). In a rhombus, all sides are also of equal length and opposite sides are parallel, but the angles are not necessarily equal, as they can vary while remaining equal in opposite pairs.
The length of the rhombus is equal to the length of the diagonal formed by the bisector of the 2 opposite acute angles.
A parallelogram is a geometric quadrilateral with two pairs of parallel sides. The opposite sides and opposite angles are equal in length.
No, there is no country called Rhombus. Rhombus is actually a geometric shape with four sides of equal length and opposite angles of equal measure.
Rhombus!
square
Yes, the base angles of an isosceles triangle are always congruent. An isosceles triangle commonly has two sides that are equal in length. The base angles are the angles opposite those two equal sides of the triangle. A geometric theorem states that if two sides of a triangle are congruent, then the angles opposite those sides are congruent. The converse is also true.
If both pairs of opposite sides are the same length, and both pairs of opposite angles are the same, the quadrilateral is a parallelogram (rhombus, rectangle, or square).
A pentagon maybe even A polygon
A rectangle. As long as the sides that are opposite of each other are the same length(required to get the 90 degree angles) but both sets must be different lengths or else you get a square
(1) Opposite sides are the same length and (2) All four corners are right-angles.
The length of the rhombus is equal to the length of the diagonal formed by the bisector of the 2 opposite acute angles.
A Rhombus
a pentagon