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Angles and polygons

Angles and polygons
asked 221k views
4 votes
Angles and polygons

Angles and polygons-example-1
asked
User Mcfroob
by
7.6k points

1 Answer

2 votes

Answer:

∠1 = 66°

Explanation:

∠1 + ∠3 = ∠4 (exterior angle theorem)

∠1 + 57° = 123°

∠1 = 66°

answered
User Mohanasundar
by
8.5k points
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