Respuesta :

stefz20

Answer:

60

Step-by-step explanation:

Sum of angles in a triangle is 180,

or Exterior Angle Theory where 120 = 60 + <3

mangoesfruitsalad

Answer: 60 degrees

Step-by-step explanation:

There are 180 degrees in a triangle

we know the measurements of two of the angles 60 and 60

Add 60+60 = 120

Do  180-120=60

Therefore Angle 3 has to also be 60 degrees

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