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 2 years ago
Given: ΔABC ≅ ΔFDE
What is the length of Segment line DE rounded to the nearest tenth?
5.8
4.2
2.2
3.6
 2 years ago
Given: ΔABC ≅ ΔFDE What is the length of Segment line DE rounded to the nearest tenth? 5.8 4.2 2.2 3.6

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mathstudent55
 2 years ago
Best ResponseYou've already chosen the best response.2Do you know the distance formula?

mathstudent55
 2 years ago
Best ResponseYou've already chosen the best response.2For 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
 2 years ago
Best ResponseYou've already chosen the best response.2In 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
 2 years ago
Best ResponseYou've already chosen the best response.2Now 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?
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