anonymous
  • anonymous
In circle A shown below, mArc BC is 71° and mArc EF is 78°. http://learn.flvs.net/webdav/assessment_images/educator_geometry_v14/pool_Geom_3641_0801_03/image0044e847a03.gif What is m∡FDE?
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
@CliffSedge @jim_thompson5910 @ParthKohli
anonymous
  • anonymous
|dw:1346794160576:dw| Inner angle equals the aritmetic average of its supporting arcs on both sides
anonymous
  • anonymous
okay...........

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anonymous
  • anonymous
Did you undestand what to compute ?
anonymous
  • anonymous
not really...
anonymous
  • anonymous
|dw:1346794316086:dw|
anonymous
  • anonymous
so is it 78?
anonymous
  • anonymous
Meant FDE of course
anonymous
  • anonymous
Come on - who are the 2 supporting arcs?
anonymous
  • anonymous
what do you mean?
anonymous
  • anonymous
|dw:1346794469021:dw|
anonymous
  • anonymous
(78 +71)/2
anonymous
  • anonymous
so its 74.5?
anonymous
  • anonymous
@Mikael is it 74.5?
anonymous
  • anonymous
Y + mdl pls
anonymous
  • anonymous
Here's a good reference: http://www.mathwarehouse.com/geometry/circle/angles-of-intersecting-chords-theorem.php
anonymous
  • anonymous
thanks @CliffSedge
anonymous
  • anonymous
@Mikael so it IS 74.5? I really need a final answer
anonymous
  • anonymous
Plese click on Blue (ribbon)
anonymous
  • anonymous
not until u tell me if 74.5 is correct
anonymous
  • anonymous
i need a final answer. I posted this so i could get help, not try to learn something and then hope i get it right....
anonymous
  • anonymous
(78 +71)/2 = 74.5
anonymous
  • anonymous
??? ...!
anonymous
  • anonymous
Tsk tsk tsk, how embarrassing: Begging for medals . . .

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