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Dafna1 [17]
3 years ago
14

Pls help me find the answer...

Mathematics
1 answer:
erastovalidia [21]3 years ago
7 0

Answer:

<h2>             m∠ABC = 30°</h2>

Step-by-step explanation:

m∠BAD = 0.5m∠BCD = 0.5•126° = 63°

The  angles in quadriteral add to 360°, so:

m∠ABC + m∠BAC + m∠ACD + reflex m∠BCD = 360°

m∠ABC + 63° + 33° + (360° - 126°) = 360°

m∠ABC + 96° - 126° = 0

m∠ABC = 30°

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