Question

Which two transformations could have been performed on triangle DEF to form congruent triangle ?

Choose exactly two answers that are correct.



A.
Triangle DEF was rotated 90° counterclockwise around the origin to form triangle DꞌEꞌFꞌ.

B.
Triangle DEF was reflected across the y-axis to form triangle DꞌEꞌFꞌ.

C.
Triangle DꞌEꞌFꞌ was translated 1 unit left and 3 units down to form triangle DꞌꞌEꞌꞌFꞌꞌ.

D.
Triangle DꞌEꞌFꞌ was rotated 90° clockwise around the origin to form triangle DꞌꞌEꞌꞌFꞌꞌ.

Answer 1

http://static.k12.com/calms_media/media/1573500_1574000/1573517/1/422c07adfc98ab3e4e279b71dfe16e4865bd4c9f/MS_IMC-141216-110713.jpg

Answer 2

I know its B for sure

Answer 3

@samanthagreer