Respuesta :
Answer:
99
Step-by-step explanation:
the supplementary angle is just the two angles that equal 180 degrees.
x+81=180
-81=-81
x=99
simple check
81+99=180
Answer:
99
Step-by-step explanation:
the supplementary angle is just the two angles that equal 180 degrees.
x+81=180
-81=-81
x=99
simple check
81+99=180