anonymous
  • anonymous
Triangle ABC is similar to triangle DEF. Using the image below, prove that lines BC and EF have the same slope. You must show all of your work to receive credit. Triangle ABC and DEF are shown. A is at negative 2, 1. B is at negative 2, 4. C is at 1, 1. D is at 4, 2. E is at 4, 4. F is at 6, 2.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
@jim_thompson5910 (:
jim_thompson5910
  • jim_thompson5910
If you plot the points, and connect them, you should get this
jim_thompson5910
  • jim_thompson5910
to find the slope of BC, you divide the length of AB over the length of AC basically slope = rise/run the slope of BC is negative since it runs downhill as you move from left to right

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anonymous
  • anonymous
oh ok so the length of AB would be 3 right ? and then the length of AC would be 3 to right ?
jim_thompson5910
  • jim_thompson5910
correct on both
anonymous
  • anonymous
oh ok so if i diided those both i would get 1 right ?
anonymous
  • anonymous
divide*
anonymous
  • anonymous
@jim_thompson5910 are u there ?
jim_thompson5910
  • jim_thompson5910
so the slope of BC is -1
jim_thompson5910
  • jim_thompson5910
now find the slope of EF
anonymous
  • anonymous
ok so the length of DE would be 2 and then DF would 2 as well right and when i divide them both i get 1
jim_thompson5910
  • jim_thompson5910
make that result negative since the line EF goes downhill as you read left to right slope of EF = -1
anonymous
  • anonymous
oh ok so would this be the answer ??
jim_thompson5910
  • jim_thompson5910
yes you have shown that slope of BC = slope of EF
jim_thompson5910
  • jim_thompson5910
both are negative 1
anonymous
  • anonymous
oh ok thank you so much ^-^
jim_thompson5910
  • jim_thompson5910
np
anonymous
  • anonymous
do u mind helping me with just two more ?
jim_thompson5910
  • jim_thompson5910
I'll help with one more

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