HELP HOW DO YOU DO THIS

HELP HOW DO YOU DO THIS class=

Answer :

Answer:

X = 49

Step-by-step explanation:

The top angle that measures 126° is a mirrored version of the angle measuring  (x + 77)°. The means the angle, (x + 77)°, has to measure 126°. So, to get x you have to subtract 126 by 77 and that gives you 49.

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