Question

determinar el valor de x

Answer 1

Respuesta:

80° (C)

Explicación paso a paso:

180° - 2beta + 20° = 2alpha

200° = 2alpha + 2beta

200° = 2(alpha + beta)

200°/2 = (alpha + beta)

100° = alpha + beta

alpha + beta = 100°

Luego:

alpha + beta + theta = 180°

100° + theta = 180°

theta = 180° - 100°

theta = 80°