matthew5340 matthew5340

13-04-2019
Mathematics

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Angles and polygons

Angles and polygons class=

Respuesta :

13-04-2019

Answer:

∠1 = 66°

Step-by-step explanation:

∠1 + ∠3 = ∠4 (exterior angle theorem)

∠1 + 57° = 123°

∠1 = 66°

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