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 rectangle is a parallelogram with four right angles, so all rectangles are also parallelograms and quadrilaterals. On the other hand, not all quadrilaterals and parallelograms are rectangles. A rectangle has all the properties of a parallelogram, plus the following: 1  The diagonals are congruent. parallelogram is a quadrilateral in which both pairs of opposite sides are parallel. A parallelogram also has the following properties: 1  Opposite angles are congruent; 2  Opposite sides are congruent; 3  Adjacent angles are supplementary;