The square root and cube root of 1.64 are _ _ _ _ _ _ _.

2. If the sum of the inner angles of a polygon is five times the sum of the outer angles, then the polygon is a _ _ _ _ _ _ _ _ _, and the sum of the inner angles is _ _ _ _ _ _ _ _.

3. The average value of data 6, 8, 9, 8, 10, 8, 9, 6 is _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.

4. If both the proportional function and the linear function y=kx+2 pass through this point (-2, -4), Then the proportional function is _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

5. Given the binary linear equations {,then X-Y = _ _ _ _ _ _, and X+Y = _ _ _ _ _ _.

6. The reciprocal of1-is _ _ _ _ _ _, and the absolute value is _ _ _ _ _ _ _.

7. As shown in the right figure, if the straight line L has a linear function y=kx+b, then b=,

K=, when x _ _ _ _ _ _ _ _ _ _

8. If one diagonal of a diamond is equal to one side, then the diamonds are adjacent to each other.

The degree of the inner angle is _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.

9. The only regular polygon that can cover the ground is _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.

10. The distance from point P(2, -3) to the X axis is _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

1 1. Translate the straight line y=2x+ 1 down by 3 units, and the straight line obtained should be _ _ _ _ _ _ _ _ _ _ _ _.

12.RT△ ABC，∠C=90？ , AC=25, BC=60, then the length of the hypotenuse AB is _ _ _ _ _ _ _.

2. Multiple choice questions:

Sum of cube roots of 1 The square roots of -27 and 9 are: ()

A. 0b. 6c-6d. 0 or -6

2. It is known that the circumference of a diamond is 9.6, the ratio of two adjacent angles is 1: 2, and the length of the shorter diagonal of this diamond is ().

A.2. 1

3. The following statement is true ()

A. A quadrilateral with four equal sides is a square B. Four quadrilaterals with equal internal angles are squares C. A parallelogram with a vertical diagonal is a square D. A rectangle with a vertical diagonal is a square.

4. The area of the triangle surrounded by the image of the linear function y=-x+2 and the two coordinate axes is () a.1b.2c.3d.4.

5. In the following equation, {is the solution ().

A.{ B .{ C .{ D . {

6. To make the regular dodecagon coincide with itself after rotation, at least rotate counterclockwise around the center ().

A. 30 BC, 45 BC, 60 BC, 75 BC

7. Fans ()

A it is an axisymmetric figure, but not a rotationally symmetric figure.

B it is a rotationally symmetric figure, but it is not an axisymmetric figure.

C it is an axisymmetric figure and a rotationally symmetric figure.

D it is neither an axisymmetric figure nor a rotationally symmetric figure.

8. The following five propositions:

① 0 is the smallest real number;

② All points on the number axis represent real numbers;

③ Irrational numbers are numbers with radical signs;

(4) A real number has two square roots in opposite directions;

The cube root of ⑤ is+/-.

The correct number is ().

A.0 B . 1 C . 4 D . 3

9. As shown below, in the same coordinate system, the images of straight lines l 1: y=2x-3 and l2: y=-3x+2 may be roughly ().

A B C D

10. The bisector of the inner corner of the parallelogram is closed ()

A. rhombic b parallelogram c rectangle d square

1 1, linear function y=-2x-3 without ()

(a) first quadrant (b) second quadrant (c) third quadrant (d) fourth quadrant

12.Rt△ABC，∠B=90？ , AC=5, BC=4, then the perimeter of the triangle is ().

a . 10 b . 1 1 c . 12d . 13

Three. Answer the question:

1. Simplified calculation:

( 1) - +2 (2)

(3)2a (4)(

2. Solve the equation:

( 1){ (2){

(3){ (4){

3. As shown in the figure, let the letter "f" rotate 90o counterclockwise around the O point to make the rotated pattern.

. O

4. There are several pigs and ducks in a farm, with 330 pigs and 8 16 feet. How many pigs and ducks are raised on this farm?

5. Suppose the proportional function passes through (1) the second and fourth quadrants, then what about k? (3 points)

(2) Point (2, 1) and find its expression. (4 points)

6. Find the area of this triangle at △ ABC, ∠C=90o, c=2, (a+b)2 =6.

7. According to the following figure, it is explained that figures 2, 3, 4, 5 and 6 can be regarded as the movement of figure 1. If it is axisymmetric, please indicate the axis of symmetry; If it is translation, please indicate the direction and distance of translation; If it is rotation, please indicate the rotation center and rotation angle; If it is the result of several sports, please explain.

8. Please use two regular polygons with the same side length for dense paving.

answer

1.( 1) 8，4 (2) 12， 1800o (3) 8，8，9 (4) y = 2x，y = 3x+2 (5)- 1，5。

(6)-1,-1 (7)3,>2 (8)60o, 120o (9) regular triangle, square and regular hexagon.

( 10)3，(-2，-3)( 1 1)y = 2x-2( 12)65 II。 ( 1) D (2) D (3) B。

Three. 1.( 1) (2) 2-(3) 12A3 (4) 4

2.( 1) { (2) { (3) { (4) {

There are 78 pigs and 252 ducks. 5.( 1)k & lt； 0 (2)y= x

6.7. Figure 2: Rotate horizontally, then vertically, and finally translate; Figure 3: Translation; Fig. 4: vertical steering; Fig. 5: Horizontal rotation and translation; Figure 6: Vertical Flip and Translation.