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squishycomeon squishycomeon
  • 24-01-2017
  • Mathematics
Answered

pleaaasse explain:)))

pleaaasse explain:))) class=

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twizzy1002 twizzy1002
  • 24-01-2017

The first one is correct.
DC=AC

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helpmetnx helpmetnx
  • 24-01-2017

Remember alternative interior angles... so angle BDC is 20°  and angle BDA is 30° 

This means that the side lengths are equal

Hope this helps ;)

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