An equilateral trapezium.
A square has 4 equal sides but is not a trapezoid.
Called an Isosceles trapezoid when the sides that aren't parallel are equal in length.
If the two sides which are not parallel have equal lengths, then the trapezoid is called an isosceles trapezoid (standard trapezoid has unequal sides). The base angles in an isosceles trapezoid are equal in measurement, also I know that a trapezoid with two nonparallel sides the same length is called an isosceles trapezoid.
A trapezoid has no equal sides providing that it is not an isosceles trapezoid.
trapezoid
The parallel sides of a trapezoid are of different lengths.
A trapezoid need not have any equal sides, but it may have some equal sides. The only requirements to be a trapezoid, is that it has 4 sides, and at least one pair of parallel sides.
No, a trapezoid does not have 4 equal sides.
No
Not necessarily. The two sides of equal length could be adjacent sides.
In a parallelogram, both pairs of opposite sides are parallel and equal. In a trapezoid (UK trapezium), only one set of sides is parallel, and the sides may all have unequal lengths, or two sides may have equal length with equal and opposite angles (this is routinely called an isosceles trapezoid).
A four-sided polygon with two parallel sides is called a trapezoid. In a trapezoid, the two parallel sides are known as the bases, while the non-parallel sides are called the legs. The parallel sides of a trapezoid are of different lengths, distinguishing it from a parallelogram where both pairs of opposite sides are parallel and equal in length. The sum of the interior angles of a trapezoid is always equal to 360 degrees.