Question

The measure of two verticle angles are 9x + 3 and 12x - 6. Find x.(1 point)

Answer 1

Vertical angles are congruent, meaning they have the same measure. Therefore, we can set the two expressions equal to each other and solve for x:

9x + 3 = 12x - 6

Subtract 9x from both sides:

3 = 3x - 6

Add 6 to both sides:

9 = 3x

Divide both sides by 3:

x = 3

Therefore, x = 3.