几何活动课课前小测

1. P1 is a polygon with 5 sides. P2 is a polygon with twice the number of sides of P1.

Quantity A	Quantity B
Twice the sum of the measure of the interiorangles of P1	The sum of the measure of the interiorangles of P2

（）.

2. P, Q, and R are three points in a plane, and R does not lie on line PQ. Which of the following is true about the set of all points in the plane that are the same distance from all three points? （）.

3.

Quantity A	Quantity B
AB	BC

（）

4. In the ceiling of room, an opening was cut in the shape of a square with sides that are 1 foot in length.A circular fixture will be placed over the opening. If the circular fixture covers the square opening completely, which of the following could be the diameter of the circular fixture, in inches? (Note:1 foot=12 inches.) Indicate all such diameters （）【多选题】

5.

Quantity A	Quantity B
AB	BC

（）

6. Two sides of a triangle have length 6 and 8. Which of the following are possible areas of the triangle? I. 2 II. 12 III. 24（）

7. If the length of each side of an equilateral triangle were increased by 50 percent, what would be the percent increase in the area?（）

8. 
Which of the following statements individually provide(s) sufficient additional information todetermine the area of triangle ABC above? Indicate all such statements.（）【多选题】

9. 
If ABCD is a square with area 625, and CDEF is a rhombus with area 500, then the area of the shaded region is（）

10. （）

Quantity A	Quantity B
AO	AB