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Help answer ANY of these questions please!

Help answer ANY of these questions please!-example-1
User Bartimar
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9. Vertical angles theorem
10. x = 12; 2x+16 = x+28
11. D: x = 13, y = 115 (65 =5x, 360 = 65 + 65 + 115 + 115)
12. x = 131; 180 - 48 = 131
User Boiledwater
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