5. The diagram represents a rectangular garden. The shaded regions are planted in flowers, and the unshaded region is a walk 2 feet wide. All angles are right angles.
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?
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