Logical geometry
This task is about geometric properties of quadrilaterals.
A quadrilateral is a twodimensional shape with four straight sides.
Five quadrilaterals are shown below.
Trapezium
(At least 1 pair of parallel sides)

Rhombus
(2 pairs of parallel sides)

Parallelogram
(2 pairs of parallel sides,
all sides equal length)

Square
(2 pairs of parallel sides,
all sides equal length, all angles 90^{o})

Rectangle
(2 pairs of parallel sides,
opposite sides equal length, all angles 90^{o})

Following are statements about quadrilaterals. One statement in each pair is true and the other is false.