Question 1172518
Try drawing the triangle with a vertex at (0, 0), another at (0, 4), and the last at (5, 0).
Transform by changing the coordinates (x+4, y-3)
so the (0, 0) one becomes (4, -3), the one at (0, 4) becomes (4, 1), and the last becomes (9, -3)
The triangles are similar and congruent. The second is shifted to the right 4 units and down 3 units compared to the first.
The lines you draw have the same length and are parallel to each other. The slope of the lines is -3/4, the change in y/change in x.