The measure of two vertical angles are 3z and 6z - 12. Find z

Answer 1

Vertical angles are always congruent, meaning they have the same measure.
So we can set up an equation:
3z = 6z - 12
Subtracting 3z from both sides, we get:
0 = 3z - 12
Adding 12 to both sides, we get:
12 = 3z
Dividing both sides by 3, we get:
z = 4