calculusxy
  • calculusxy
Geometry question! Medal!!
Mathematics
jamiebookeater
  • jamiebookeater
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calculusxy
  • calculusxy
|dw:1444595882512:dw|
calculusxy
  • calculusxy
In the figure above, x = A. 25 B. 65 C. 155 D. 160 E. 165
calculusxy
  • calculusxy

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calculusxy
  • calculusxy
calculusxy
  • calculusxy
Nnesha
  • Nnesha
|dw:1444596179995:dw| find angle a
calculusxy
  • calculusxy
I got 155
calculusxy
  • calculusxy
As the final answer
Nnesha
  • Nnesha
hmm try again show ur work :=) remember vertical angles are equal
calculusxy
  • calculusxy
70 - 25 = 65 angle A = 65
Nnesha
  • Nnesha
right but how did you get 155 ?
Hero
  • Hero
Next time, start off your question this way:" For the final answer, I got . .."
calculusxy
  • calculusxy
|dw:1444596458557:dw|
calculusxy
  • calculusxy
\(\color{#0cbb34}{\text{Originally Posted by}}\) @Hero Next time, start off your question this way:" For the final answer, I got . .." \(\color{#0cbb34}{\text{End of Quote}}\) `okay`
Nnesha
  • Nnesha
hmm no |dw:1444596575498:dw| opposite angles a = b vertical angles are a and b
Nnesha
  • Nnesha
if a =65 then b =5 |dw:1444596672173:dw| now you can find x
Nnesha
  • Nnesha
b=65*
Nnesha
  • Nnesha
brb
calculusxy
  • calculusxy
how would be equal to 5?
calculusxy
  • calculusxy
sorry *be => b
math&ing001
  • math&ing001
@calculusxy 155 is correct |dw:1444596953526:dw|
Nnesha
  • Nnesha
that was a typo b= 65**
Kainui
  • Kainui
|dw:1444596840551:dw| This might be _too_ tricky, but here's what I did. The way I did it is we have two triangles so we can set up two equations: \[90+25+a = 180\]\[90+x+a=180\] Then I subtract one equation from the other to get: \[25-x=0\]\[25=x\]
calculusxy
  • calculusxy
wait. so i am correct?
Nnesha
  • Nnesha
|dw:1444597034452:dw| wait x is an angle right ?
calculusxy
  • calculusxy
no x is the exterior angle
calculusxy
  • calculusxy
|dw:1444597077781:dw|
Nnesha
  • Nnesha
aw i see sorry i thought x is an angle ...
Kainui
  • Kainui
Oh whoops well 180-that answer I gave then haha. Oh well. I feel like I'm contributing to confusion here, so I'll head out.
calculusxy
  • calculusxy
no problem :) i welcome as many contributions as possible :)

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