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.
Quadrilaterals - Explanations. 1. An isosceles trapezoid does not have perpendicular diagonals, and a rectangle and a rhombus are both. parallelograms. So, a quadrilateral with perpendicular diagonals that is not a parallelogram must be a kite. 2. Since the diagonals of a parallelogram bisect one another, set the lengths of segments BE and ED equal, and. solve for x. BE = ED. 3x inches = 84 inches. x = 28.