Respuesta :
Based on the vertical angles theorem, the measure of angle 1 is: 48°.
What are Vertical Angles
Vertical angles are always directly opposite each other and are formed when two straight lines crosses each other.
In the diagram given, the angle that is directly opposite angle is 48°, since it is an alternate angle to 48° formed on lines m and n (lines k and l are parallel lines).
Therefore:
m∠1 = 48° (vertical angles)
Learn more about vertical angles on:
https://brainly.com/question/1673457
Answer:
X = 9
Step-by-step explanation:
Yes it´s 9 as said in the question