2 answers:
Answer:
x=54
Step-by-step explanation:
easy
180 is a triangle
so
exterior+interior=180
so 180-123
57
now add all up to 180
180=57+x+69
x=54
9514 1404 393
Answer:
54
Step-by-step explanation:
The sum of the interior angles marked is the same as the marked exterior angle. Then the unknown is the difference of the known angles:
x° = 123° -69°
x° = 54°
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Step-by-step explanation:
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A. is the answer i’m pretty sure
