EchinaforceÂ® Echinacea drops (tincture) and tablets - herbal remedy for colds and flu. EchinaforceÂ® Echinacea is a licensed traditional herbal remedy for colds and flu. It helps the body fight the symptoms of these infections by supporting the immune system, helping to maintain the body's resistance.
User: Which parallelogram has four right angles and four congruent sides? A. square B. rectangle C. trapezoid D. rhombus Weegy: The true statement is: A square is a rhombus. kyler07|Points 151|.
A parallelogram has 2 pairs of parallel sides. End of story. It can be proved that opposite sides are equal length and diagonals bisect, but thatâs another story. A rhombus is a special case of a parallelogram with all sides being equal. It can be proved the diagonals intersect at right angles. But itâs not part of the definition. Squares and rectangles are rhombi and parallelograms, respectively.