Children with expressive language disorder have difficulty conveying or expressing information in speech, writing, sign language or gesture. (For preschool children, the difficulty expressing themselves in writing is not evident, as they have not started formal education.)
A rectangle is defined as a parallelogram (a quadrilateral with two sets of parallel sides) with the non-parallel sides joining perpendicularly (at 90Â°). A square is a rectangle with the additional constraint the all four sides be of equal length.
One difference is that a square has right angles, but a rhombus only has acute and obtuse angles. A similarity is that if you tilt a square it turns into a rhombus. Another siâ¦milarity is that they are both Quadrangles. Another difference is that Rhombus lines are slanted.