In the figure, r//s

< 2= < they are corresponding angles of parallel lines cut by a transversal.
< 5=< by the vertical angles theorem.

 , because they are corresponding angles of parallel lines cut by a transversal.

by Vertical angles theorem.

Step-by-step explanation:

From the given picture, we can see there are two parallel lines r and s intersected by a transversal line t.

Since corresponding angles of parallel lines cut by a transversal.

Therefore they must be equal.

Then,

Also, since are vertical angles.

Vertical angles theorem says that vertically opposite angles  at any cross section must be equal.

by Vertical angles theorem.

linear

step-by-step explanation:

for the friend request.

when a figure, such as triangle (xyz) is reflected over the line y = x to create x'y'z' the x-coordinates and y-coordinates of the original image (pre-image) will be reversed for the image. (e.g., (x, y) > (y, x)) this means that the pre-image position of the x- and y-coordinates switch places which in turn provides a mirror like image of the original xyz.  

i notice that when i draw a line segment from x to x', that the points are parallel from each other -- they are exactly across from each other and do not intersect with any other points.  

yes, think i would see the same characteristic if you drew the line segment connecting y with the reflecting line and then y' with the reflecting line because of the essence of reflections. because it is a mirror image, each point was effected the same way which leads me to conclude that they same would apply to y and y'.