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Katenathalieosorio18go

Answer:

1. 60°

2.70°

3.30

Step-by-step explanation:

1. 90-30-60°

2. 90+20=110

180-110-70°

3. 180-90-90

2x+x=90

3x=90

3x/3=90/3

x=30

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