For what values of x and y are the triangles to the right congruent by hl? a triangle has a vertical side of length x, a longer horizontal side, and a third side that falls from left to right with a length of x plus 2. a right angle is indicated at the intersection of the vertical and horizontal sides. a second triangle has a vertical side of length y plus 7, a longer horizontal side, and a third side that falls from left to right with a length of 4 y. a right angle is indicated at the intersection of the vertical and horizontal sides. xx x plus 2x+2 4 y4y y plus 7