14. Use the coordinate rules to rotate triangle ABC 90 degrees counterclockwise around the origin. List the coodinates and draw the image of triangle A'B'C'.

(a, b) ---- (___, ____)

A(-1, -2) ---- A' (____,____)

B(1, 2) ------B' (___,____)

C(3, -1) -----C' (___,____)

15. Find the matrix that results from a 270 degree counterclockwise rotation of triangle A'B'C'

16. Why would you expect triangle A"B"C" to have the same vertices as triangle ABC from problem 14?

(a, b) ---- (___, ____)

A(-1, -2) ---- A' (____,____)

B(1, 2) ------B' (___,____)

C(3, -1) -----C' (___,____)

15. Find the matrix that results from a 270 degree counterclockwise rotation of triangle A'B'C'

16. Why would you expect triangle A"B"C" to have the same vertices as triangle ABC from problem 14?