happydeafy happydeafy
  • 16-12-2019
  • Mathematics
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A quadrilateral has angles measuring 100° 90° 90° find the measure of its fourth angle

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sqdancefan
sqdancefan sqdancefan
  • 10-02-2021

9514 1404 393

Answer:

  80°

Step-by-step explanation:

The sum of angles in a quadrilateral is 360°, so the missing angle is ...

  4th angle = 360° -100° -90° -90° = 80°

The measure of the fourth angle is 80°.

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