Answer the questions to describe the transformations of figure ABCD. B
6
CIC
B'
8
D D'
A
6.3
A
D"
A"
B"
1. Is ABCD a translation, rotation, or reflection of ABCD? Explain how you can tell.

Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b