anonymous
  • anonymous
Given: ΔABC ≅ ΔFDE What is the length of Segment line DE rounded to the nearest tenth? 5.8 4.2 2.2 3.6
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
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mathstudent55
  • mathstudent55
Do you know the distance formula?
anonymous
  • anonymous
No ._.

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mathstudent55
  • mathstudent55
For two points, (x1,y1) and (x2,y2) the distance between them is: d = sqrt((x2 - x1)^2 + (y2 - y1)^2) That looks confusing. This looks easier to understand:|dw:1355170387441:dw|
mathstudent55
  • mathstudent55
In other words, take the difference between the x values of the two points and square it. Then take the difference between the y values of the two points and square that too. Then add those two squares together and take the square root.
mathstudent55
  • mathstudent55
Now look at what you're asked for: the length of DE. Since you know the triangles are congruent, which side in the first triangle corresponds to side DE?
anonymous
  • anonymous
Thanks (:

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