Respuesta :

musiclover10045

The 3 angles when added together need to equal 170.

To find the 3rd angle subtract the 2 given angles from 180


180-30-70 = 80

Answer: B. 80

noobly234

Answer:

B) 80

Step-by-step explanation:

All triangles add up to 180 degrees

So to solve angle 3 the equation would be

Angle 3 = 180 - Angle 1 - Angle 2

Angle 3 = 180 - 30 - 70

Angle 3 = 80

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