MikeyMaximum
  • MikeyMaximum
A triangle is graphed in the coordinate plane. The vertices of the triangle have coordinates (–3, 1), (1, 1), and (1, –2). What is the perimeter of the triangle? A. 6 B. 12 C. 7 D. 14
Mathematics
katieb
  • katieb
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kc_kennylau
  • kc_kennylau
|dw:1434257653653:dw|
kc_kennylau
  • kc_kennylau
So, we need to find the length of each line
MikeyMaximum
  • MikeyMaximum
I kinda don't know hot to do that part Am I post 2 find the slope?

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UnkleRhaukus
  • UnkleRhaukus
you don't need the slope, you just need the lengths of the sides
UnkleRhaukus
  • UnkleRhaukus
how long is this side? |dw:1434259132205:dw|
UnkleRhaukus
  • UnkleRhaukus
notice how the x coordinate are the same here @MikeyMaximum, you only need to find the difference in y coordinates | 1-(-2) | = ?
MikeyMaximum
  • MikeyMaximum
I got 3
UnkleRhaukus
  • UnkleRhaukus
yes, now what is the length of the top side of the triangle?
UnkleRhaukus
  • UnkleRhaukus
|dw:1434445510728:dw|

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