A rhombus is a parallelogram that has 4 congruent sides and 4 right angles. If a parallelogram is a rhombus , then its diagonals are perpendicular. If a parallelogram is a rhombus , then each diagonal bisects a pair of opposite angles. Parallelograms opposite sides are parallel. If one diagonal of a parallelogram are perpendicular , then the parallelogram is a Rhombus.
A trapezoid is a quadrilateral with only one pair of parallel sides. A isosceles trapezoid is when the legs of a trapezoid are congruent. If a trapezoid is isosceles , then each pair of base angles are congruent. If a trapezoid has one pair of congruent base angles , then its isosceles trapezoid. A trapezoid is isosceles IFF ( if and only if) its diagonals are congruent. Midsegment of a trapezoid is the segment that connects the midpoints of the legs of the trapezoid.









