Respuesta :

PhillSwift

Answer:

X = 70 (red)

Step-by-step explanation:

all three angles of a triangle equall 180

so 180 - (30+80) = x

180 - 110 = 70

Answer: x=70°

Explanation: We know that the angles in a triangle add up to 180°, so...

180-80=100
100-30=70

x=70°

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