Answer:
Look at image I attached below.
Step-by-step explanation:
Important points to memorize when finding missing angles like these:
- Two angles directly <u>across</u> from each other, <u>not next to</u>, are equal.
- <u>All</u> 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°.
- <u>All</u> angles in <u>any triangle</u> add up to 180°.
When you know all these important rules, the rest is just a matter of adding and subtracting.
