Answer:
Vertical angel are always equal in measure
Vertical angel are congruent. Vertical angle
Such as<1 and <2, form linear pair with the same angle, <4,giving m<1 +<m4= 180 and m<2+m4
=180. With substitution, m<1+m<2 and they are congruent.
Step-by-step explanation:
Sana po maka tulong