Help picture below problem 18
![Help picture below problem 18 class=](https://us-static.z-dn.net/files/d38/74f300706357c88d18d1ec94b9f49240.png)
Solution :-
This triangle is a right angled triangle as we can see ∠POC, has a right angled sign. Now, we will assume the missing angle to be x, thus,
25° + 90° + x = 180° ( Angle sum property of a triangle )
115° + x = 180°
x = 180° - 115°
x = 65°
Thus, the measure of missing angle is 65°.
Hope that helps. :D