yaboiizav yaboiizav
  • 06-07-2017
  • Mathematics
contestada

what is the measure in degrees of <ABC?

what is the measure in degrees of ltABC class=

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sydneyyhall
sydneyyhall sydneyyhall
  • 06-07-2017
those two angles total equal 180 degrees. 
Since we know the first angle equals 155 degrees.
180-155+25.
ABC is 25 degrees. 
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texaschic101
texaschic101 texaschic101
  • 06-07-2017
< CBD = 155
< CBD and < ABC are supplementary angles which, when added = 180

so...< CBD + < ABC = 180
           155 + < ABC = 180
           < ABC = 180 - 155
           < ABC = 25 <===
Answer Link

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