Question

find the measure of ∠fij.
m∠fij = □°

Explanation:

Step1: Ecuación de ángulos alternos internos

$$3x + 12=9x$$

Step2: Resolver para \(x\)

$$12 = 9x - 3x$$
$$12=6x$$
$$x = 2$$

Step3: Calcular \(m\angle FIJ\)

Sustituir \(x = 2\) en \(9x\)
$$m\angle FIJ=9\times2 = 18^{\circ}$$

Answer:

\(18\)