4. How many of the quadrilaterals possible in the previous problem are:
a. Squares?
b. Rectangles?
c. Parallelograms?
d. Trapezoids?
e. Trapezoids that are not parallelograms?
Assume the given figure is:
Solution:
a. Square is 1 which is A
b. Rectangle is 1 which is B
c. Parallelogram is 1 which is C.
d. Trapezoids are 4 which are A,B,C,D.
e. Trapezoid that are not parallelogram is 1 which is only D.
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