Respuesta :

Answer:

it s 100

Step-by-step explanation:

50+50 = 100

180 -100= 80 third angle of isoceles triangle.

vertical angles are same so linear angle of 1 is 80.

Now we subtract 80 from 180 to get angle 1 and answer is 100

nevinchauhan0
The answer to the question is 100

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