Respuesta :

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Answer: 121

Step-by-step explanation:

Angles on a line add up to 180.

180 - 115 = 65

Angles in a circle add up to 360 degrees.

360 - 304 = 56

Angles in a triangle add up to 180 degrees.

180 - 56 - 65 = 59

Angles on a line add up to 180 degrees. 180 -

59 = 121