11. Flowcharts Classify Quadrilateral by Sides
The pseudocode below checks to see if a quadrilateral has all sides equal, or just opposite sides equal, and classifies it accordingly.
ALGORITHM classifyQuadrilateralBySides()
BEGIN
INPUT sidesEqual, oppositeSidesEqual
IF sidesEqual = TRUE THEN
PRINT "Rhombus"
ELSEIF oppositeSidesEqual = TRUE THEN
PRINT "Parallelogram"
ELSE
PRINT "Other quadrilateral"
ENDIF
END