Answer:
Look at image I attached below.
Explanation:
Important points to memorize when finding missing angles like these:
- Two angles directly across from each other, not next to, are equal.
- All angles that are on one side of a straight line add up to 180°, because a straight line has an angle measure of 180°.
- A full spin-around equals 360°.
- All angles in any triangle add up to 180°.
When you know all these important rules, the rest is just a matter of adding and subtracting.