They both have 2 lines of symetry
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Rectangle Area of parallelogram = Base * Height Area of rectangle = Base * Height
2ab = area The sides of this rectangle are, a * sqrt(2) and b * sqrt(2) The equation of the ellipse reduces to, 0.5 + 0.5 = 1 Greetings, Dim Leed
Any rectangle whose sides are in the ratio 2:3. For example, in a 6x9 rectangle, the width (6) is two-thirds of the height (3), so it is similar to the 2x3 rectangle.
Circle. Ellipse. Rectangle. Square. Triangle. Parallelogram. Trapezoid. Losenge. Deltoid. Pentagon. Hexagon. Parabola. That's twelve.
Assuming the area is a rectangle (and not an ellipse, for example), it is 15*12 = 180 square feet.