Respuesta:
y+75°=180°
y= 105°
triangulo= 180°
180°-45°= 135°
135°-105°=30°
a+y=105°+30° = 135°
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Respuesta:
y+75°=180°
y= 105°
triangulo= 180°
180°-45°= 135°
135°-105°=30°
a+y=105°+30° = 135°