I think you want to prove that a rectangle is a quadrilateral. You can prove this with definitions. The definition of a quadrilateral is that it is a shape with four sides. Since a rectangle has four sides, that proves that a rectangle is a quadrilateral.
Answer is D) 2/3 because you divide the whole equation by 3 scene as 2cups=3gal. In order to get one gal, you need to divide the right side by 3 to make one and what you do to one side of an equation, you must do to the other.
Answer:
57cm²
Step-by-step explanation:
area for trapezoid=
b¹+b²=x
x÷2=v
v×h=z
h=height
b=base
14+5=19
19÷2=9.5
9.5×6=57