Question

Triangle lmn is drawn with vertices at l(?4, ?1), m(0, ?1), n(?4, ?3). determine the image vertices of l?m?n? if the preimage is rotated 90� clockwise.

Answer 1

(1,-4), (1,0), (3, -4)

Explanation:

What I am seeing is a ? before each number in the parentheses. I am not sure if that is to stand for a negative sign. I am assuming that all the numbers are positive. The answer is different if any of the numbers are negative.

Rule for 90° clockwise

(x,y) → (y,-x)

(4,1) → (1,-4)

(0,1) → (1,0)

(4,3) → (3, -4)