Identify a transformation: translation, reflection, rotation or dilation

1. Triangle ABC has vertices A(6, 5), B(−4, −1) and C(5, 2). Its image has vertices A'(5, −6), B'(−1, 4) and C'(2, −5). Which transformation is it? Write translation, reflection, rotation or dilation.

   Answer: rotation

2. Triangle ABC has vertices A(−6, 4), B(4, −2) and C(1, 4). Its image has vertices A'(−4, −6), B'(2, 4) and C'(−4, 1). Which transformation is it? Write translation, reflection, rotation or dilation.

   Answer: rotation

3. Triangle ABC has vertices A(4, −3), B(−6, −5) and C(−6, 3). Its image has vertices A'(8, −6), B'(−12, −10) and C'(−12, 6). Which transformation is it? Write translation, reflection, rotation or dilation.

   Answer: dilation

Tip: Compare the shapes: same size and just slid (translation), same size and a mirror image (reflection), same size and turned (rotation), or a different size (dilation).