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Aleksandr [31]
4 years ago
14

I need help with this question

Mathematics
1 answer:
kaheart [24]4 years ago
4 0

Answer:

∠ABD  = 20

Step-by-step explanation:

BD is the angle bisector, ∠ABD = ∠CBD  

∠ABD + ∠CBD = 40

∠ABD  + ∠ABD  = 40

2∠ABD  = 40

∠ABD  = 40/2

∠ABD  = 20

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