Rhombus or paralellogram
a rectangle
A rhombus
Any polygon can have a right angle. A right angled triangle is an example.
Sorry, you either have more than one right angle or more than four sides.
a rhombus, a quadrilateral without right angle, a quadrilateral with equal opposite parallel sides but no right angles
a rectangle
A rhombus
Any polygon can have a right angle. A right angled triangle is an example.
Any polygon, if it is not regular, can have 1 right angle.
A parallelogram is a four sided polygon with opposing parallel sides of equal length. Then if it has four right angles, the polygon becomes a rectangle.
Draw two parallel lines of unequal length, and connect their end points. If you have a right angle, it is a right trapezoid. If the non-parallel sides are equal in length, it is an isosceles trapezoid.
A trapezium, also known as a trapezoid in American English, is a four-sided polygon (quadrilateral) with at least one pair of parallel sides. The length of the parallel sides is called the bases, while the non-parallel sides are called the legs. The area of a trapezium can be calculated using the formula: Area = (1/2) × (Base1 + Base2) × Height. Trapeziums can be classified into isosceles trapeziums, where the legs are of equal length, and right trapeziums, which have one angle that is a right angle.
Sorry, you either have more than one right angle or more than four sides.
A right angle triangle
There are lots of polygons like that. If by 1 right angle, you mean exactly 1 right angle, there are no such quadrilaterals, but there are pentagons (in fact n-gons for all n>=5.)
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a rhombus, a quadrilateral without right angle, a quadrilateral with equal opposite parallel sides but no right angles