luis94
luis94 luis94
  • 15-09-2017
  • Mathematics
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So difficult!!! Someone help

So difficult Someone help class=

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Louli
Louli Louli
  • 15-09-2017
when two lines cross like this, sum of measures of opposite angles is 180.
this means that:
measure angle AEC + measure angle BED = 180
4x-40 + x+50 = 180
5x +10 = 180
5x = 170
x = 34
therefore:
measure angle AEC = 4x-40 = 4(34)-40 = 96
measure angle BED = x+50 = 34+50 = 84
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