Point E(0, -2) is a vertex of square DEFG. After a 90* clockwise rotation of the square about the origin, which of the following is the location of E?

A. (-2,0)
B. (2,0)
C. (2,2)
D. (0,2)

Point D(-3,5) is a vertex of triangle DEF. After rotation of the triangle about the origin D us located at (3,5). Which of the following was the rotation of the triangle?

A. 90* (degrees) clockwise
B. 90* Counterclockwise
C. 180*
D. 360*
Please help! I don't know anything about this! I'm not asking for the answers, but I need someone to explain this for me!

1 A C D

2 A
3 C
4 B
5 C

1 A C D

2 A
3 C
4 B
5 C
I got a 100%

1. A C D

2.b -2, 0

3. C180 degrees

4. B 60 degrees

5. C 120 degrees
100% pass just took it trust me will pass I promise I am telling you the truth!

Don't do the string thing, it's not practical. You wanna know how to solve mathematicaly. So I'm gonna assume you know clockwise and counterclockwise, I would hope. Ask if you don't. Say you have point (1,0), and you rotate it 90° clockwise around the origin [which is point (0,0)]. It would end up at (0,-1). Another such rotation,it would end up at (-1,0), another one at (0,1), and a 4th one would bring it back to (1,0). Plot those points and see what they look like. Maybe draw lines to them from the origin and see the angles that are formed. Its a really simple thing when there are no zeros in the point's coordinate. So for any (a,b), in which they are both positive (meaning the point is in the first quadrant), you can just change the signs into whatever signs the next quadrant has when the rotations are 90° angles, and invert the numbers. For example, (1,2) rotated 90° counterclockwise (going from 1st to 2nd quadrant) will turn into (-2,1). In the other direction, it would have turned into (-2,-1). I hope that helps a bit more, I feel like my explanation was insufficient.

He is correct.^

Dd is correct I got 100% trust me will pass it!

Thanks DD! I got 7/7 100%

the answers to the practice test in connexus is

1.A;the center of rotation C;the number of degreesof the rotation D;the direction rotation
2.A;(-2,0)
3.C180 degrees
4.B60 degrees
5.C 120 degrees

The answers to the 1st quiz:
1.C;15cm
2.D;12cm
3.A;Q
4.C;10
5.B;28 mi
6.A;II
7.A;(-8,-10)
8.B;5

The final one is:
The solution is (x + a, y + b).
b) The response is: (-1, -2)
(X, Y) = are the beginning coordinates (-2, -5)

Find a and b now.
The distance an is in the x direction. a = 1
The distance b is in the y direction: b = 3

(x + a, y + b) = (-2 + 1, -5 + 3) = is the final position (-1, -2)
(use quill bot to make sure you dont get in trouble for plagarisum<3)

anyone answers?

no sorry Katie pickle but I got 80% so number 2 is not B it's A