vanessa5666 vanessa5666
  • 26-06-2018
  • Mathematics
contestada

what is the measure of arc BD shown in the diagram below?

what is the measure of arc BD shown in the diagram below class=

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calculista
calculista calculista
  • 05-07-2018
we know that
The measure of the external angle is the semi-difference of the arcs that it covers.
so
m∠BCD=(1/2)*[arc AE-arc BD]
20=(1/2)*[85-BD]
40=85-BD
BD=85-40
BD=45°

the answer is
BD=45°
Answer Link
domoignacio
domoignacio domoignacio
  • 15-11-2018

the the measure of arc BD is : 45°

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