anonymous
  • anonymous
PLEASE HELP ME FOR MEDALS!!! a.) On graph paper, graph ΔABC if A(3, 0), B(2, 7), and C(6, 4). What is the best name for this triangle? Justify your answer using slope and/or lengths of sides. b.) On graph paper, graph ΔABC if A(3, 0), B(2, 7), and C(6, 4). Find mA. Explain how you found your answer
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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Shayaan_Mustafa
  • Shayaan_Mustafa
@ari<3 We are not for medals here. We are volunteerily help needy ones. Like you. Never give us lust for medals. Thank you.
anonymous
  • anonymous
i'm sorry...i didn't know. can you please help me?
Shayaan_Mustafa
  • Shayaan_Mustafa
becareful next time. well have you draw diagram?

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anonymous
  • anonymous
no.
AccessDenied
  • AccessDenied
get some graphing paper and try graphing the points first. :) we can think about the question with a picture
anonymous
  • anonymous
okay
Shayaan_Mustafa
  • Shayaan_Mustafa
@AccesDenied he is right.
anonymous
  • anonymous
|dw:1332971804201:dw| it looks like this when i drew it on the graph,.. is then an isocless?
AccessDenied
  • AccessDenied
I get this (attachment)
1 Attachment
anonymous
  • anonymous
oh yea i did it wrong sorry
anonymous
  • anonymous
so equalaterial?
AccessDenied
  • AccessDenied
Well, we can figure it out by using distance formula between each side. We can have an equilateral (all sides =), a scalene (no sides =), or an isosceles triangle (2 sides =), so we can check those side lengths (AB, BC, and AC) to figure it out.
anonymous
  • anonymous
isosceles
AccessDenied
  • AccessDenied
do you have the distances of sides already? or are you guessing based on what it looks like? :P
anonymous
  • anonymous
what it looks like
AccessDenied
  • AccessDenied
okay... well, to 'prove' that it is isosceles, we have to give exact side lengths and show that they're equal. I don't think you could tell with those guesses for sure. Teachers would prefer the proof. :) We'll use this formula: \[ D = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2};~~ for~(x_1,y_1)~ and~ (x_2,y_2) \]
anonymous
  • anonymous
ok
AccessDenied
  • AccessDenied
As an example, here's the length of AB: \[ \begin{split} AB &= \sqrt{(\color{red}{3} - \color{blue}{2})^2 + (\color{red}{0} - \color{blue}{7})^2}~~~A(\color{red}{3,0}),~B(\color{blue}{2,7}).\\ &= \sqrt{(1)^2 + (-7)^2}\\ &= \sqrt{1 + 49}\\ &= \sqrt{50}\\ &= 5\sqrt{2}\\ \end{split} \]

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