A five-sided polygon with two right angles is called a pentagon. The specific arrangement of the right angles can vary, but a common example is an irregular pentagon where two adjacent angles measure 90 degrees. The other three angles must sum to 270 degrees to satisfy the interior angle sum of 540 degrees for a pentagon. This results in a variety of shapes depending on the lengths of the sides and the measures of the remaining angles.
A right triangle.
Providing it has no right angles then it is a scalene triangle.
It looks like a square with a triangle on top of it.
Right triangle. Two angles are 45 degrees, and the third angle is 90 degrees. Two sides are equal.
A rectangle is a four sided polygon with four right angles and two pairs of parallel side. [Equal sides is not required since it is implied by parallel and right angles].
A right trapezoid is a four-sided polygon with two right angles and two parallel sides.
A right [angled] trapezium.
square or rectangle.
A right triangle.
Providing it has no right angles then it is a scalene triangle.
A four-sided polygon with all sides equal and no right angles would be a rhombus. A rhombus consists of two acute angles and to obtuse angles.
That is a rectangle.
It looks like a square with a triangle on top of it.
An irregular pentagon is a polygon that has five sides and two right angles. A regular polygon on the other hand does not have right angles.
Right triangle. Two angles are 45 degrees, and the third angle is 90 degrees. Two sides are equal.
A rectangle is a four sided polygon with four right angles and two pairs of parallel side. [Equal sides is not required since it is implied by parallel and right angles].
A parallelogram is a quadrilateral (four-sided polygon) with two pairs of parallel sides. By definition, a parallelogram does not need to have all right angles. Think of rhombuses, which do not have any right angles, yet are parallelograms. Therefore, the answer is no.