Answer:
- Angles 1 & 2 are congruent/equal in measure
- Angles 1 & 3 are supplementary (I'm sure of this part) because they are adjacent and add up to 180° (I'm sure of this part, but I don't know what exact wording they are looking for in your problem)
- Angles 2 & 4 are supplementary (same reasoning as angles 1 &3)
Explanation:
Angles in a trapezoid that are adjacent are always either congruent (meaning they have the same measure) or they are supplementary (meaning you take one small angle measuring less than 90° - known as an acute angle - and one large angle measuring more than 90° - known as an obtuse angle - and when you add the two angles together they will always equal 180° - which means they are supplementary).