Respuesta :

Answer:

∠ 1 = 125°

Step-by-step explanation:

If the staircase and rail were parallel , then

∠ 1 and 55° are same- side interior angles and sum to 180° , that is

∠ 1 + 55° = 180°( subtract 55° from both sides )

∠ 1 = 125°

For the rail to be parallel to the bottom of the staircase then ∠ 1 = 125°

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