cammymsmith
cammymsmith cammymsmith
  • 11-01-2018
  • Mathematics
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altavistard
altavistard altavistard
  • 11-01-2018
Triangle ABC is isosceles (even tho' it doesn't look so).

m<BDE = m<BED because of that.

Thus, 66 degrees + 2 m<BDE = 180 degrees, and

2 m<BDE = 114 degrees.  Thus, m<BDE = 57 degrees.
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