from the figure, find x and y
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sum of angles in a triangle is 180°
52°+ 90+ (3y+5)°= 180°
147° +3y= 180°
3y° = 180° - 147°
3y° = 33
y= 11°
In second triangle the unknown angle is 52° [alternate angle]
52°+ x°+ 65°=180°
117°+ x° = 180°
x° = 63°
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