Respuesta :
Answer:
3rd,5th,6th
Step-by-step explanation:
complementary angles has 90 degree angles and 5x+40 = 5x10+40 = 50+40 = 90 and adjacent angles are angles that add up to a complementary or supplementary angle and do not overlap.
Hope this helps!
Answer:
Step-by-step explanation:
3rd option
x=10
angle ABD + angle DBC = 90
ie 5x + 40= 90
5x=90-40
5x=50
x=10
5th option
both are complementary angles
as they are sum is 90 degree
hope this helps you and dont forget to make me as the brainliest......