Question

del grafico calcule : a + B ​

Answer 1

RESOLUCIÓN:

$180° - θ + 180° - θ + 180° - θ = 120° \\ 540° - 3θ = 120° \\ 540° - 120° = 3θ \\ 420° = 3θ \\ \frac{420°}{3} = θ \\ 140° = θ$

$θ + \alpha + \beta = 360 ° \\ 140° + \alpha + \beta = 360° \\ \alpha + \beta = 360° - 140° \\ \alpha + \beta = 220°$

RESPUESTA:

$\alpha + \beta = 220°$