geekfromthefutur
  • geekfromthefutur
Trying to finish math class tonight need help plz medal and fan Determine if triangle ABC with coordinates A(0, 2), B(2, 5), and C(−1, 7) is an isosceles triangle. Use evidence to support your claim.
Mathematics
jamiebookeater
  • jamiebookeater
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geekfromthefutur
  • geekfromthefutur
UnkleRhaukus
  • UnkleRhaukus
You could draw it
UnkleRhaukus
  • UnkleRhaukus
and then work out the side lengths with pythag

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geekfromthefutur
  • geekfromthefutur
I hate how answers are right in front of u and u miss them
UnkleRhaukus
  • UnkleRhaukus
|dw:1434608957828:dw|
UnkleRhaukus
  • UnkleRhaukus
|dw:1434608996821:dw|
UnkleRhaukus
  • UnkleRhaukus
can you plot the other points . . .
geekfromthefutur
  • geekfromthefutur
Yea
geekfromthefutur
  • geekfromthefutur
|dw:1434609063886:dw|
UnkleRhaukus
  • UnkleRhaukus
good work here is the triangle |dw:1434609238604:dw|
geekfromthefutur
  • geekfromthefutur
Oh so it is
UnkleRhaukus
  • UnkleRhaukus
now what are these lengths |dw:1434609259636:dw|
geekfromthefutur
  • geekfromthefutur
Ok so we add or divide the coordinates
geekfromthefutur
  • geekfromthefutur
for A and B
UnkleRhaukus
  • UnkleRhaukus
|dw:1434609413513:dw|
geekfromthefutur
  • geekfromthefutur
A lot of colors and 5 -2= 3
UnkleRhaukus
  • UnkleRhaukus
yeah we get 3, and 2 |dw:1434609546636:dw|
geekfromthefutur
  • geekfromthefutur
oh ok
UnkleRhaukus
  • UnkleRhaukus
So the interval AB is the hypotenuse of the right angled triangle with other sides of 2, and 3 pythag says 2^2 + 3^3 = AB^2 ie AB = √ ( 2^2 + 3^3 ) =
geekfromthefutur
  • geekfromthefutur
thx for the help. lol but we arent done r we xD
UnkleRhaukus
  • UnkleRhaukus
simplify AB, what do you get? we still need to find BC and CA
geekfromthefutur
  • geekfromthefutur
Ok, so your saying do 2^2 + 3^3= 13?
UnkleRhaukus
  • UnkleRhaukus
Whoops, some typos: pythag says 2^2 + 3^2 = AB^2 ie AB = √ ( 2^2 + 3^2 ) = √ 13 (some how you got the thirteen right)
geekfromthefutur
  • geekfromthefutur
Lol yea i think i messed up
UnkleRhaukus
  • UnkleRhaukus
we have AB = √13
UnkleRhaukus
  • UnkleRhaukus
|dw:1434609971499:dw| Now lets work out BC (same method)
UnkleRhaukus
  • UnkleRhaukus
|dw:1434610093237:dw|