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miss Akunina [59]
4 years ago
9

If EC bisects Find BED

Mathematics
1 answer:
Serga [27]4 years ago
7 0
If <span>EC </span>bisects ∠BED, then m∠BEC = m∠DEC
11x + 2 = 8x + 20
11x - 8x = 20 - 2
3x = 18
x = 6

 m∠BED = 2 * m∠BEC
               = 2(11x + 2)
               = 2(11*6 + 2)
               = 2(66 + 2)
               = 2 * 68
               = 136°
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