Respuesta :

Answer:

∠A = 45°

Step-by-step explanation:

◺ABC is a right angled triangle.

Sum of interior angles in a triangles is 180.

∠A + ∠B + ∠C = 180°

∠A + 90° + 45° = 180°

∠A = ( 180 - 90 - 45 )°

∠A = 45°

Note : -

□ is 90°

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