Corresponding and allied angles

Maths

Lie on the same side of a transversal and are in different 'regions'

Lie on the same side of a transversal and are in same 'regions'

If two allied angles are 90 degrees, does this mean the line is parallel?

Lie on different sides of a transversal AND in the same 'region'

A pair of angles at different intersection points with a transversal are called alternate if they…

Alternate angles only appear in the interior region.

Alternate angles only appear in the exterior region.

If I am told two angles are alternate and one angle is 39 degrees, then the other angle will be...