For example, let's say six adjacent angles add up to 360 degrees making them vertical angles, and they can be sorted into three pairs of opposite angles. Two values are known, and four are unknown.

Corresponding angles are equal. The lines make an F shape. Notice that the F shape can be upside down or back to front. We've already seen that intersecting lines create vertically opposite angles ...

When it comes to calculating more complex adjacent angle problems, it will be helpful to identify opposite angles formed by the same line segments. For example, let's say six adjacent angles add up to ...