Triangle 1
A = 64
B = 51
C = ?
C = 180 - 64 -51
C = 65
Triangle 2
F = 65
D = 64
E ?
E = 180- 65 -64
E = 51
Procedure
Yes they are similar
AA (or AAA) or Angle-Angle Similarity
If any two angles of a triangle are equal to any two angles of another triangle, then the two triangles are similar to each other.