Ineed with number 1-4 i don’t understand..

Step-by-step explanation:

You are exected to know the relationships of angles created where a transversal crosses parallel lines.

The appearance of the diagram often gives you a clue.

You also expected to know the name (or category) of angles less than, equal to, or greater than 90°. Respectively, these are acute, right, and obtuse angles.

1. Adjacent angles are supplementary. The supplement of the given angle is 109°, so x will be obtuse.

2. Opposite exterior angles are equal, so y will be 131°. It is obtuse.

3. Opposite interior angles are equal, so w will be 53°. It is acute.

4. Corresponding angles are equal, so x will be 124°. It is obtuse.

my answer is$ 12

step-by-step explanation:

because 15 -2=12