how do i show triangle BEF is equilateral

Given : AB = AD
http://www.webpagescreenshot.info/img/537de1eb128444-02939013

Question

how do i show triangle BEF is equilateral

Given : AB = AD
http://www.webpagescreenshot.info/img/537de1eb128444-02939013

anonymous · Answer

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rational · Answer

yes, but A is center of top triangle and D is center of bottom triangle

rational · Answer

so ur picture is bit misleading

anonymous · Answer

ic , i dint  note that was given

rational · Answer

oh sorry, i stumbled on this question while going thru some other question;
here are the givens :
1) AB = AD 
2) AB is radius of top circle
3) AD is radius of bottom circle

Prove BEF is equilateral

anonymous · Answer

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rational · Answer

yes this is looking good :)

anonymous · Answer

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anonymous · Answer

u can conclude this as a beginning
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rational · Answer

can u just briefly show why it will be perpendicular

anonymous · Answer

next step , by SAS
BF=BE

anonymous · Answer

sure :)

anonymous · Answer

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anonymous · Answer

any point A
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rational · Answer

okay

anonymous · Answer

lolz forget abt step by step ill wrote down the theory :D

rational · Answer

okay anything is fine :)

anonymous · Answer

first join
EA and AF 
and ED and DF
now we need to first show tht AD and EF bisect each other ..
then the rest can be proved...

anonymous · Answer

http://www.mathopenref.com/constperpextpoint.html

anonymous · Answer

and its more like this http://www.onlinemathlearning.com/perpendicular-bisector.html

rational · Answer

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