trapezoid
A four-sided shape with only 2 sides the same length is called a rhombus.
A 9-sided shape is known as a nonagon.
The four sided shape that has two parallel lines is called a trapezoid. A parallelogram is a four sided shape that has two pairs of parallel lines.
There is none. A 5 sided shape is a pentagon but that has 10 diagonals, not 2.
A trapezoid or trapezium. UK definition verses American. One has 2 sides parallel, one has no sides parallel. Take your pick.
A trapezoid is a shape that has 4 sides and 2 parallel sides. The sides that are parallel are called the bases.
Quadrilateral.
trapezoid
A four-sided shape with only 2 sides the same length is called a rhombus.
If the implication is that it is a quadrilateral with one a pair of equal sides and one pair of unequal sides, it could be an isosceles trapezium, or a non-isosceles trapezium one of whose sloped sides is equal to either the base or the top, or a distorted kite or arrowhead - neither of which have a specific name.
trapezium
Parrallelagram
A trapezium.
Trapezoid
trapezium
trapezoid.