Question

answer me i will mark as brainliest​

Answer 1

Answer:

60 degree

Step-by-step explanation:

due to exterior angle property

Answer 2

Answer:

A= 60 degrees

Step-by-step explanation:

b = supplementary angle ( Two angles are called supplementary when their measures add up to 180 degrees)

1st angle Is 120 dergees so 2nd will be 60 degrees (180-120)

angle C will be the same...

so 60+60= 120,

And 180-120= 60

hence angle A = 60 degrees

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