Respuesta :

Answer:

72

Step-by-step explanation:

Answer:

x = 72°

Step-by-step explanation:

Its an isoceles triangle so both angles are 54°

Sum of angles in a triangle is 180°, therefore:

54° + 54° + x = 180°

108° + x = 180°

x = 180° - 108°

x = 72°