Researchers often wish to develop scales. that respond to a single characteristic. â Determine what features are most important when classifying a group of items. â Generate \factor scores representing values of the underlying constructs for use in other analyses.
Report Abuse. yes a square is always a parallelogram because it has to pairs of parallel lines and that's the rules to a parallelogram but a parallelogram is not always a square because to be a square it has to have two pairs of parallel lines and all the angles have to be 90 degrees. Lily R Â· 6 years ago. Thumbs up.
Square is a parallelogram with right angles and equal sides ( Fig.35 ). A square is a particular case of a rectangle and a rhombus simultaneously; so, it has all their above mentioned properties. Trapezoid is a quadrangle, two opposite sides of which are parallel (Fig.36). Here AD || BC. Parallel sides are called bases of a trapezoid, the two others ( AB and CD )  lateral sides.