A rectangle is a plane figure with four straight sides and four right angles, esp. one with unequal adjacent sides. A square is a plane figure with four equal straight sides and four right angles. A rhombus is a parallelogram with opposite equal acute angles, opposite equal obtuse angles, and four equal sides.
Sides cannot be right angles whatever the figure because sides are sides and not angles, the answer you are looking for is a rhombus.
A plane figure with three straight sides and three angles.
No
A rectangle is a quadrilateral, which is a plane figure bounded by four straight sides. Both opposite pairs of sides are equal in length and all four vertices are right angles.
A rectangle is a plane figure with four straight sides and four right angles, esp. one with unequal adjacent sides. A square is a plane figure with four equal straight sides and four right angles. A rhombus is a parallelogram with opposite equal acute angles, opposite equal obtuse angles, and four equal sides.
The figure which is always a rectangle is a SQUARE having four straight sides and four right angles.
Hendecagon
hendecagon
A figure with four equal sides and no right angles is a rhombus. A rhombus is comprised of two acute angles and two obtuse angles.
A four sided figure with four equal sides and no right angles is a diamond, or a rhombus. If it had four right angles, it would be a square.
A rectangle is a plane figure with four straight sides and four right angles. Generally considered to have unequal adjacent sides to differ them from squares.
A quadrilateral - if the sides are straight lines.
Sides cannot be right angles whatever the figure because sides are sides and not angles, the answer you are looking for is a rhombus.
Strictly speaking a pentagon is a plane figure with five straight sides and five angles, so yes, a pentagon can have one - or more - right angles. Imagine a rectangle with one of the corners cut off - that would have five sides and three right angles. .......... ............. ................ .................. .................. .................. ..................
It is a quadrilateral
A plane figure with three straight sides and three angles.