Answer:
20-x
Step-by-step explanation:
you need the value of x to answer
inside angles need to equal 180
180-75-40 = 65
now the question mark and 65 need to equal 180
180-65 = 115
answer is 115
6+6+6+6
Answer: 140
Angle K is 55 degrees
Angle K corresponds to Angle R