Why are the trianglos congruent? A translation up 2 and to the right 2 maps NS to
N'S'.8 to 28', and ST to ST",
2
A counterclockwise rotation of 180' maps
RS to
1818 to 8' and ST to S'T',
1 R
S
210
S*
pi
A clockwise rotation of 90' and a reflection across
the x axis mapsRto R', 8 to ZS', and/T to
ZT
A reflection across the x-axis maps Rto RS
to 8' and Tto/T.