Common name: American cockroach Scientific name: Periplaneta americana Linnaeus Order: Blattaria. Description: This is one of the largest common cockroaches in Texas, reaching 1-1/2 to 2 inches.They are reddish-brown in color.ommon name: American cockroach Scientific name: Periplaneta americana Linnaeus Order: Blattaria. Description: This is one of the largest common cockroaches in Texas, reaching 1-1/2 to 2 inches.
If we have a parallelogram where all sides are congruent then we have what is called a rhombus. The properties of parallelograms can be applied on rhombi. If we have a quadrilateral where one pair and only one pair of sides are parallel then we have what is called a trapezoid.
1 Prove a quadrilateral is a parallelogram given congruent opposite angles. 2  Prove a quadrilateral is a parallelogram given that the diagonals bisect each other. 3  Prove a quadrilateral is a parallelogram if one pair of sides is both congruent and parallel.. Corresponding parts of congruent triangle are congruent. 9. is a parallelogram. 9. If two pairs of opposite sides of a quadrilateral are congruent, the figure is a parallelogram. So, given only the information that the diagonals bisect each other, you can prove that the shape is a parallelogram.