4 years ago

If EC bisects Find BED

1 answer:

7 0

If EC 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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