Question

If polygon ABCD rotates 90������ counterclockwise about the origin to create polygon A���������B���������C���������D���������, what are the coordinates of point B��������� ?


(-3, 1)


(-1, -3)


(-1, 3)


(3, -1)

Answer 1

3, 1

Answer 2

@bibby do you think you could help me

Answer 3

according to this site http://www.mathwarehouse.com/transformations/rotations-in-math.php
the transformation for rotating 90 degrees about the origin is \((x,y)\longrightarrow(-y,x)\)

Answer 4

its (-3,1) thanks that website helped

Answer 5

hold up

Answer 6

point b is (3,1)

iif we apply the translation, we'd get (-1,3)