In a geometric figure two intersecting lines creating four angles. If 1 and 3 are a vertical pair, m 1 = (4x + 26) °, and m 3 = 98°, what is the value of x? (1 point)
• 14
• 18
• 72
• 98
If angles 1 and 3 are a vertical pair, then they are equal in measure. So, we can set up the equation:
m1 = m3
4x + 26 = 98
We can solve this equation to find the value of x:
4x = 98 - 26
4x = 72
x = 72/4
x = 18
So, the value of x is 18.