Answer:
[tex]\angle EYL[/tex] and [tex]\angle AYS[/tex]
[tex]\angle SYL[/tex] and [tex]\angle EYA[/tex]
Step-by-step explanation:
Vertical angles can be defined as the pair of angle which are opposite when two lines crosses, as the image attached shows.
Now, [tex]\angle EYL[/tex] and [tex]\angle AYS[/tex] are vertical angles, because they are opposite when lines ES and AL cross at point Y.
Another pair of vertical angles are [tex]\angle SYL[/tex] and [tex]\angle EYA[/tex], because they are opposite when lines ES and AL cross at point Y.
Therefore, all pair of angles which are vertical angles are
[tex]\angle EYL[/tex] and [tex]\angle AYS[/tex]
[tex]\angle SYL[/tex] and [tex]\angle EYA[/tex]