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Digiron [165]
3 years ago
15

(01.07 MC)

Mathematics
2 answers:
lesya [120]3 years ago
8 0

Answer:

m∠BEC + 30° = 70°; Addition Property of Equality

Step-by-step explanation:

The only way to justify that  m∠BEC + 30° = 70° you would have to add them. Hence, Addition Property of Equality .

Svet_ta [14]3 years ago
6 0

Answer:

m∠BEC + m∠CED = m∠BED; Angle Addition Postulate

Step-by-step explanation:

I toke the test and I was right

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