To show that two triangles in different quadrants are congruent, you would typically first use a reflection to align them and then a translation to move them into position.
In this case, if you are moving a triangle from Quadrant IV to Quadrant II, the correct sequence of steps would be:
Reflection, then translation
This means you first reflect the triangle across the x-axis (to move it from Quadrant IV to Quadrant III) and then translate it to the left into Quadrant II.
So the answer is: Reflection, then translation.