No. This is only true of parallelograms.
Most quadrilaterals do not have opposite sides which are equal in length. Sadly, there is no special name for them.
Quadrilaterals that have parallel opposite sides (assuming that each side is parallel to its opposite): A parallelogram A rectangle A square (really a rectangle with all sides equal in length)
This is a quadrilateral. It could be a symmetric trapezium /
First of all, quadrilaterals are just shapes with 4 sides! The word "quadrilateral" comes from the Spanish word "cuatro" which means four. One shape that has all sides equal length and is a quadrilateral is a square. Another one is a rhombus. Because it has 4 equal sides that are the same length. That easy! I hope this helps!
Both shapes have 4 sides, two pairs equal in length. In a parallelogram the equal length sides are opposite each other. In a kite the equal length sides are adjacent.
Most quadrilaterals do not have opposite sides which are equal in length. Sadly, there is no special name for them.
Quadrilaterals that have parallel opposite sides (assuming that each side is parallel to its opposite): A parallelogram A rectangle A square (really a rectangle with all sides equal in length)
For quadrilaterals, it would be a rectangle, a square, or a rhombus. Two sides of an isosceles triangle are also equal.
There are infinite amounts of quadrilaterals that have sides that aren't all equal. In regular quadrilaterals, however there are rectangles and kites that have uneven lengths of sides.
A quadrilateral is any plane figure bounded by four straight lines. Within this definition are special shapes. The Parallelogram : has both pairs of opposite sides parallel (and opposite sides are equal in length). The Rhombus : is a parallelogram with all its sides of equal length. The Rectangle : is a parallelogram with each of its vertex angles equal to 90° (and opposite sides are of equal length). The Square : is a rectangle with all its sides of equal length. The Trapezium : is a quadrilateral with only one pair of parallel sides - which are NOT of equal length. The Isosceles Trapezium : is a trapezium with its two non parallel sides equal in length. The Kite : is a quadrilateral with two pairs of adjacent sides equal in length
parallelograms and squares.
There are three main types of quadrilaterals: parallelograms, trapezoids, and kites. Parallelograms have opposite sides parallel and equal in length. Trapezoids have one pair of parallel sides. Kites have two pairs of adjacent sides that are equal in length.
Parallelograms (if the equal sides are opposite one another) or kites (if they are adjacent).
a square and a rhombus
The only quadrilaterals that have all sides an equal length are a square abd a rhombus.
All quadrilaterals have two [pairs] of opposite sides and in most cases they are not equal.
Parallelograms (and their special cases), isosceles trapezium.