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NEED HELP AILL GIBE 20 point...

NEED HELP AILL GIBE 20 Point class=

Sagot :

9514 1404 393

Answer:

  36°

Step-by-step explanation:

BY bisects angle B, which has a measure of 72°. That means angles 3 and 4 are each half of 72°, or 36°.

  m∠4 = 36°