Answer:
PT being an angle bisector means that it divides the angle into two congruent parts. In this case, PT is bisecting angle 1.
Given that m <1 = 7x + 7, we can equate the two parts of the bisected angle.
So, we have:
m <PT1 = m <1
Since PT bisects angle 1, both parts will have the same measure.
Therefore, we can set up an equation:
7x + 7 = m <1
To solve for x, we need more information. If we are given the measure of angle 1 or the measure of PT, we can substitute it into the equation to solve for x.
Explanation: