cammymsmith
cammymsmith
11-01-2018
Mathematics
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I really need this! Thanks
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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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