Question

Please I will mark you brainliest please do it quickly and these are parallel
2)

Answer 1

Let angle of 78 degrees be y,

x = y

We know that vertically opposite angles are equal, therefore x and y are equal.

Therefore, x=78

Hope you find this helpful, if you did please mark as Brainliest :)

Answer 2

Answer:

Step-by-step explanation:

Because

X is vertically opposite to angle 78

This can be proven by

78+78+a(unknown angles)+a=360

156+2a=360

2a=360-156

2a=204

a=204÷2

a=102

therefore

78+78+102+102=360

Therefore 78+78+152+152