Answer:
12° and 168°
Step-by-step explanation:
If x is the angle, and y is the supplementary angle, then:
x + y = 180
x = y − 156
Solve the system of equations using substitution:
y − 156 + y = 180
2y = 336
y = 168
Plug back into either equation to find x:
x = 12
12 AND 168 DEGREES
Take supplementary angle as 180-X
Therefore: x={180-x}-156
x= 24-x
2x=24
x=12
Therefore one of the angle = 12 degrees
the other angle = 180-X degree
=180-12
=168 degrees
x = 128°
123 + 109 + x = 360
x = 360 - (123 + 109)
x = 360 - 232
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