The sum of the areas of the shaded regions

　　2,800 square feet

　　答案：D

　　6.What are the coordinates of point B in the xy-plane above?

　　A.

　　B.

　　C.

　　D.

　　E.

　　答案：B

　　7.If 9 trees are originally planted in a circular pattern as shown above, what is the least number of trees that must be transplanted so that the 9 trees will be in 2 straight rows?

　　A.4

　　B.5

　　C.6

　　D.7

　　E.8

　　答案：B

　　8.If the sum of the measures of two angles is 180o,each angle is a supplement of the other, whereas, if the sum of their measures is 90o, each is a complement of the other.

　　The measure of an angle with a supplement that measures 130o

　　The measure of an angle with a supplement that measures 40o

　　答案：C

　　9.If a solid pyramid has 4 vertices and 4 faces, how many edges does the pyramid have?

　　A.2

　　B.3

　　C.4

　　D.6

　　E.8

　　答案：D

　　10.A rectangular floor with an area of 12 square meters is drawn to scale with 2 centimeters representing 1 meter.

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