# Angles Question

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## Grade 7 Angles CCSS: 7.G.B.5

[math]mangDBC = x[/math]

[math]mangCBA = 2x[/math]

- [math]2x - x = 90[/math]
- [math]2x + x = 90[/math]
- [math]2x - x = 180[/math]
- [math]2x + x = 180[/math]