yes
It is irregular.
An irregular trapezium.
An irregular trapezium, or trapezoid, is defined by having only one pair of parallel sides, while the lengths and angles of the other sides can vary. Unlike a regular trapezium, the non-parallel sides are not necessarily equal in length, and the angles can be of different measures. Additionally, an irregular trapezium does not have symmetry, which distinguishes it from isosceles trapeziums, where the non-parallel sides are equal and the base angles are equal. Overall, its properties are characterized by the lack of uniformity in side lengths and angles.
In the United States, yes its very definition is a general irregular quadrilateral. However, outside the U.S., its the same thing as a trapezoid and there are regular and irregular trapezoids.
Its parallel sides are of different lengths. Its angles are not all the same.
It is irregular.
Irregular
A parallelogram, a rhombus, kites, arrowheads, trapezium and irregular quadrilaterals. However, some kites, arrowheads, trapezium and irregular quadrilaterals can have one (or more) right angles.
An irregular trapezium.
irregular trapezium
An isosceles trapezium and selected irregular quadrilaterals.
In the United States, yes its very definition is a general irregular quadrilateral. However, outside the U.S., its the same thing as a trapezoid and there are regular and irregular trapezoids.
Some kites and irregular quadrilaterals. Certainly not a trapezium or parallelogram.
A trapezium, an irregular pentagon (like a child's drawing of a house with a roof), irregular n-gons of higher order.
Its parallel sides are of different lengths. Its angles are not all the same.
A right trapezium or an irregular quadrilateral.
A trapezium, and some irregular polygons of 5 or more sides.