The picture above

The picture above

The picture above

X is equal to 12°

Step-by-step explanation:

From the picture we can make the following equation...

90° = 3x + (x + 42°)

90° = 3x + x + 42°

4x = 90° - 42°

4x = 48°

x = 12°

c. prove the lengths are the same.

step-by-step explanation:

you need to prove the segments are congruent. congruent segments have the same length. find the lengths of the segments using the distance formula, and compare them.

answer: c. prove the lengths are the same.