The vertex a of square ABCD coincides with the origin of coordinates, and the coordinate of vertex B is (0,4), then the coordinate of vertex C is ()

The coordinates of vertex C are (- 4,4) or (4,4)

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1. Square ABCD with side length 4, where point a is at the origin, point B is at the positive half axis of X axis, and point D is at the negative half axis of Y axis, what are the coordinates of the four vertices? Such as the title
2. A round clock face, clockwise from "12" clockwise rotation () to "1"; clockwise from "3" clockwise rotation 120 degrees to ()
3. When the clock face rotates 40 ° clockwise, it is recorded as + 40 ° and what does - 40 ° mean
4. On the clock, turn the clock clockwise from the number "12" to "6" for + 1 / 2 cycle, So, what is the number of the clock face that the hour hand refers to after setting the hour hand from "12" for - 1 / 4 week?
5. Judgment question: the ratio of the rotation speed of the hour hand and minute hand on the clock face is 1:60
6. The minute hand on the clock goes 60 times faster than the hour hand______ ．
7. After the minute hand revolves around the center of the clock face for 3 circles, the hour hand revolves around the center of the clock face ()
8. The hour hand from 6 o'clock to 12 o'clock revolves () degrees around the center of the clock face
9. On the clock face, if the minute hand rotates one circle, then the degree of the clockwise rotation is______ ．
10. How many degrees does the minute hand rotate on the clock face
11. Given a (0,4), B (3,0), P (1,0), in the rectangular coordinate system, O is the origin, and the triangle AOB rotates m counterclockwise around point P (M is greater than 0) Less than 180, get the triangle a1ob1, make the point B1 fall on the edge of the triangle AOB, calculate the coordinates of point B1
12. As shown in the figure, in the plane rectangular coordinate system, ob is on the x-axis, ∠ ABO = 90 ° and the coordinates of point a are (1,2). Rotate △ AOB 90 ° counterclockwise around point a, and the corresponding point C of point O just falls on a branch of hyperbola y = KX. (1) find the analytic formula of hyperbola. (2) the intersection of the straight line passing through point c y = - x + B and the hyperbola is e, and find the coordinates of point E and the area of △ EOC
13. As shown in the figure, in the coordinate system, point a (0,4) and point B (3,0) rotate △ ABO counterclockwise around point o 90 ° so that point a falls on point C on the x-axis and point B falls on point E on the y-axis (1) Verification: AE = oc-ob; (2) find the length of CF
14. As shown in the figure, in the coordinate system, point a (0,4), point B (3,0), rotate the triangle ABO point 90 degrees counterclockwise, so that a falls on the x-axis, point C, and point B falls on the y-axis, point E, connecting CE AB is equal to F. we know that AB is equal to 5
15. Rotate the triangle ABO 90 degrees counterclockwise around point B
16. As shown in the figure, rotate the right triangle abd 90 counterclockwise around the right vertex a to the position of the triangle ACF. The triangle abd is equal to the triangle ACF. The extension of BD intersects CF with point E and connects BC. If the angle FBE = angle CBE, try to determine the relationship between CE and BD (including the position relationship and quantity relationship),
17. If a triangle is rotated 90 ° counterclockwise around a vertex, will each corresponding line segment in the original graph and the rotated graph be perpendicular to each other? Is there such a theorem?
18. Draw any △ ABC and make the following rotation: (1) with a as the center, rotate the triangle 40 ° counterclockwise (2) Take B as the center, rotate the triangle clockwise by 60 ° (3) take a point outside the triangle as the center, rotate the triangle clockwise by 120 ° (4) take the midpoint of AC as the center, rotate the triangle 180 ° to get the picture! Hurry
19. How to rotate a triangle 90 ° anticlockwise around point o?
20. How to draw a triangle by turning it 90 ° anticlockwise around its outer point?