Question

Calcular “x”, si: AB=BD, m CBD=54°

Answer 1

Triangulo ABC

$θ + 54 + θ + 54 + θ = 180 \\ 3θ + 108 = 180 \\ 3θ = 180 - 108 \\ 3θ = 72 \\ θ = \frac{72}{3} \\ θ = 24$

RESPUESTA:

$x = 54 + θ \\ x = 54 + 24 \\ x = 78$