Если луч OC – биссектриса \(\angle\) AOB, то \(\angle\) AOC = \(\angle\) BOC. \(\angle\) AOB = \(\angle\) AOC + \(\angle\) BOC. \(\angle\) AOC = \(\angle\) AOB. \(\angle\) AOB = \(\angle\) BOC.
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Задание

Если луч OC – биссектриса \(\angle\) AOB, то

  • \(\angle\) AOC = \(\angle\) BOC.
  • \(\angle\) AOB = \(\angle\) AOC + \(\angle\) BOC.
  • \(\angle\) AOC = \(\angle\) AOB.
  • \(\angle\) AOB = \(\angle\) BOC.

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