1. The following statement is true ()

Translation does not change the shape and size of the graph, but rotation does.

B. Translation and rotation will not change the shape and size of the graph.

C graphics can be translated or rotated in a certain direction for a certain distance.

D. In the process of graphic translation and rotation, the corresponding angles are equal, and the corresponding line segments are equal and parallel.

2.(20 15? Many square patterns in the courtyard of Shanxi merchants contain the beauty of symmetry. Here are four kinds of square patterns, among which the one that is symmetrical but not axisymmetric is ().

A.B. C. D。

3. As shown in the figure, move an equilateral triangle with a side length of 4 to the right by 2 units along BC to get a triangle, and the perimeter of the quadrilateral is ().

12 B. 16 C.20 D.24

4. As shown in the figure, in a square, the point is above, and the point is the last moving point. Connect the line segments and rotate 90 counterclockwise around the point to get the line segments. To make the point just fall at the top, the length is ().

A. 1

5.(20 15? Point P(-2, -3) moves 1 unit to the left, and then moves up by 3 units, so the coordinates of the point obtained are ().

A.(-3，0) B.(- 1，6) C.(-3，-6) D.(- 1，0)

6. As shown in Figure (1), △ and △ are isosceles right triangles, ∠ and ∠ are right angles with points on them, and △ can overlap with △ after rotating counterclockwise around the point, and then take Figure (1) as the "basic figure" and rotate counterclockwise around the point to get Figure (2).

45 years, 90 years

C.60，30 D.30，60

7. Rotate around this point for a certain angle to get δ. If, then the following statement is correct ().