morgs5203 morgs5203
  • 01-03-2020
  • Mathematics
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What do the angle measures have to be for the lines a and b to be parallel? should get two numbers

What do the angle measures have to be for the lines a and b to be parallel should get two numbers class=

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jdoe0001 jdoe0001
  • 01-03-2020

Check the picture below.  If the angles are supplementary the a || b.

[tex]\bf (x+85)+4(x-20)=180\implies (x+85)+(4x-80)=180 \\\\\\ 5x+5=180\implies 5x=175\implies x = \cfrac{175}{5}\implies x = 35 \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\measuredangle (x+85)}{(35)+85\implies 120}\qquad \qquad \stackrel{\measuredangle 4(x-20)}{4(35-20)\implies 60}[/tex]

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