Question

What are the coordinates of the vertices of the image after a 90-degree counter-

clockwise rotation about the origin?
3+
(2, 3)
2+
4
(-3,-1)
1 0
1
2.
1
3
(2, -1)
+X
4
triangle

Answer 1

7272826/$!\*\€ui7$2727ueiehsiqwowowowowowowowowowoeoeoeo 我喜欢鸡战利品，我可以亲吻它是的，喜欢它很酷

Answer 2

(-3, 2), (1, -3) and (1, 2)

Explanation:

When a point (x, y) is rotated 90° counterclockwise rotation new coordinates become (-y, x)

Thus the negative of the original y coordinate becomes the new x coordinate and the original x coordinate becomes the y coordinate

( 2, 3) -----> (-3, 2)

(-3, -1) -----> (1, -3)

( 2, -1) -----> ( 1, 2)