2 years ago

Pls help i will mark brainlyest

Mathematics

1 answer:

Sergeeva-Olga [200]2 years ago

4 0

Answer:

∠b=82°

Step-by-step explanation:

143°=∠c+∠b (exterior angle property)

143°=61°+∠b

∠b=143-61

∠b=82°

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