SOLUTION
TRIANGLE #2 IS A DILATION OF TRIANGLE #1.
TRIANGLE #3 IS A TRANSLATION OF TRIANGLE #1.
TRIANGLE #4 IS A REFLEXION OF TRIANGLE #1.
Step-by-step explanation
A translation moves a shape up, down or from side to side but it does not change its appearance in any other way.
Dilation is a transformation, which is used to resize the object. Dilation is used to make the objects larger or smaller.
A reflection is known as a flip. A reflection is a mirror image of the shape. An image will reflect through a line, known as the line of reflection. A figure is said to be a reflection of the other figure, then every point in a figure is at equidistant from each corresponding point in another figure.