∆abc has vertices at a(12, 8), b(4, 8), and c(4, 14).
∆xyz has vertices at x(6, 6), y(4, 12), and z(10, 14).
∆mno has vertices at m(4, 16), n(4, 8), and o(-2, 8).
∆jkl has vertices at j(14, -2), k(12, 2), and l(20, 4).

1) are congruent. a is a single rigid transformation that maps the two congruent triangles.

1) a. triangle abc and triangle xyz
b. triangle abc and triangle mno
c. triangle jkl and triangle abc
d. triangle mno and triangle xyz

2) a. reflection
b. dilation
c. rotation
d. translation