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TheQube1

  • one year ago

I need help with this Geometry PLEASE. I'm not asking for just the answer but how to go about finding it. I will Fan and Medal Best responders

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  1. Here_to_Help15
    • one year ago
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    Ok

  2. anonymous
    • one year ago
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    What's the question?

  3. TheQube1
    • one year ago
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    Here is the question @lexiladybug22 @Here_to_Help15

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  4. Here_to_Help15
    • one year ago
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    Connections?

  5. TheQube1
    • one year ago
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    Yes

  6. TheQube1
    • one year ago
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    @Here_to_Help15 are you in geometry B? and do you know this lesson?

  7. Here_to_Help15
    • one year ago
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    Ok good um i need help actually ;) and yes i am

  8. TheQube1
    • one year ago
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    Dang lol you on the final to?

  9. Here_to_Help15
    • one year ago
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    Nope

  10. TheQube1
    • one year ago
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    oh well that is what this is.

  11. ganeshie8
    • one year ago
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    which part are you working on ?

  12. TheQube1
    • one year ago
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    @ganeshie8 all three

  13. ganeshie8
    • one year ago
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    |dw:1433182139371:dw|

  14. ganeshie8
    • one year ago
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    check whether the below proportion holds\[\large \dfrac{AC}{EC}~~\stackrel{?}{=}~~\dfrac{BC}{DC}\]

  15. ganeshie8
    • one year ago
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    \[\large \dfrac{12}{9}~~\stackrel{?}{=}~~\dfrac{20}{15}\] \[\large \dfrac{4}{3}~~\stackrel{?}{=}~~\dfrac{4}{3}\] which is true, therefore \(\triangle ABC \sim \triangle EDC\) is true

  16. mathstudent55
    • one year ago
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    Just like there is SAS for proving two triangles congruent, there is a version of SAS for proving two triangles similar. SAS Similarity is: if the lengths of two sides of a triangle are proportional to corresponding parts of another triangle, and the included angles are congruent, then the triangles are similar.

  17. mathstudent55
    • one year ago
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    Above, @ganshie8 showed that the lengths of the sides are proportional. From the figure, you see that angles ACB and ECD are vertical, making them congruent. This is what you need for SAS Similarity to work, and the triangles are similar.

  18. TheQube1
    • one year ago
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    @mathstudent55 so using SAS similarity is ow I find out that problem?

  19. mathstudent55
    • one year ago
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    Using SAS Similarity allows you to answer part (A). You can say that the triangles are similar, and the reason is SAS Similarity, since there is a pair of congruent corresponding angles, and this pair of angles are included by two pairs of corresponding sides whose lengths are proportional. All of this is part (A).

  20. TheQube1
    • one year ago
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    what about part (B) and (C)? @mathstudent55

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