Answer:
Step-by-step explanation:
We find an equation using variable [tex]N[/tex] assuming [tex]N[/tex] is in the bottom right corner.
Our equation is [tex]90+60+N=180[/tex] because the sum of the three angles is [tex]180[/tex].
Solving by subtracting both [tex]90+60[/tex] from both sides,
We have [tex]N=30[/tex] which is our solution.
