anonymous
  • anonymous
** NEED HELP! IM DESPERATE**
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
A kite is a quadrilateral with two pairs of adjacent, congruent sides. The vertex angles are those angles in between the pairs of congruent sides. Prove the diagonal connecting these vertex angles is perpendicular to the diagonal connecting the non-vertex angles. Be sure to create and name the appropriate geometric figures.
ganeshie8
  • ganeshie8
basically, you're looking for proof of 'diagonals of kite are perpendicular'
ganeshie8
  • ganeshie8
google that, you will get plenty of proofs. go thru one of them, and ask if something doesnt make sense :)

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anonymous
  • anonymous
i need a simple proof
ganeshie8
  • ganeshie8
hmm il have to think
ganeshie8
  • ganeshie8
|dw:1378591438480:dw|
ganeshie8
  • ganeshie8
|dw:1378591480614:dw|
ganeshie8
  • ganeshie8
you need to prove AC \(\perp \) DB
anonymous
  • anonymous
https://www.google.com.qa/search?q=A+KITE&bav=on.2,or.r_qf.&bvm=bv.51773540,d.Yms,pv.xjs.s.en_US.jkEW54nYU50.O&biw=1600&bih=799&um=1&ie=UTF-8&hl=en&tbm=isch&source=og&sa=N&tab=wi&ei=H6MrUuD3NImetAbGxIHgBg#hl=en&q=A+KITE+GEOMETRY+PROOF&spell=1&tbm=isch&um=1&facrc=_&imgdii=_&imgrc=fgI2JHq7crVBKM%3A%3BfWo9yZZXw4UUcM%3Bhttp%253A%252F%252Fwww.wyzant.com%252FImages%252FHelp%252Ftrap_kite33.gif%3Bhttp%253A%252F%252Fwww.wyzant.com%252Fhelp%252Fmath%252Fgeometry%252Fquadrilaterals%252Ftrapezoids_and_kites%3B469%3B307
anonymous
  • anonymous
IS THIS A GOOD PROOF im tired it 1am
ganeshie8
  • ganeshie8
4am here, tired too.. il look tomoro
ganeshie8
  • ganeshie8
|dw:1378591871224:dw|
ganeshie8
  • ganeshie8
before hitting bed, il just give u a headstart maybe..
ganeshie8
  • ganeshie8
trick here is to prove that triangles AOB and AOD are congruent then, by CPCTS, angle AOB = angle AOD = 90 Q.E.D
ganeshie8
  • ganeshie8
give it a try, if you prove the triangles are congruent, you're done.
anonymous
  • anonymous
IM not geting it
anonymous
  • anonymous
the kite has congruent sides DFEG ef congruent to gf ( given ) angle efd congruent to angle gfd ( given) df congruent to df ( reflexive property ) triangle def congruent to triangle dgf (SAS POSTULATE) de congruent to dg (CPCTC) DEFG IS A KITE
anonymous
  • anonymous
i wrote this dont know if its right i dont think it is
ganeshie8
  • ganeshie8
if u dont knw wat u r trying to prove, then...
anonymous
  • anonymous
ok so im wrong
ganeshie8
  • ganeshie8
yes lol, in the end it doesnt even say diagonals are perpendicular. so put that proof back where u copied it from uhh
ganeshie8
  • ganeshie8
1. AD = AB, CD=CB 1. Given 2. OD = OB 2. By definition, the diagonal connecting vertec angles bisects the other diagonal 3. OA = OA 3. By reflexive property 4. triangle AOB = triangle AOD 4. By SSS congruence 5. angle AOB = angle AOD 5. By CPCTC 6. angle AOB = angle AOD = 90 6. both angles addup to 180 7. AC ⊥ DB 7. definition of right angles
ganeshie8
  • ganeshie8
that should work, pls go thru that
anonymous
  • anonymous
@jim_thompson5910 what does the symbol used in step 7 of the proof mean?
jim_thompson5910
  • jim_thompson5910
⊥ means perpendicular
anonymous
  • anonymous
Oh okay, thank you
anonymous
  • anonymous
was this correct? @ram_sofia

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