DarkUnicorn16
DarkUnicorn16 DarkUnicorn16
  • 28-10-2016
  • Mathematics
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AB is perpendicular to CD . How many 90° angles are formed by the intersection?

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kyankee1999
kyankee1999 kyankee1999
  • 28-10-2016
Perpendicular lines make a cross. There are 4 right angles. 
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