TheQube1
  • TheQube1
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
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
Here_to_Help15
  • Here_to_Help15
Ok
anonymous
  • anonymous
What's the question?
TheQube1
  • TheQube1
Here is the question @lexiladybug22 @Here_to_Help15
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Here_to_Help15
  • Here_to_Help15
Connections?
TheQube1
  • TheQube1
Yes
TheQube1
  • TheQube1
@Here_to_Help15 are you in geometry B? and do you know this lesson?
Here_to_Help15
  • Here_to_Help15
Ok good um i need help actually ;) and yes i am
TheQube1
  • TheQube1
Dang lol you on the final to?
Here_to_Help15
  • Here_to_Help15
Nope
TheQube1
  • TheQube1
oh well that is what this is.
ganeshie8
  • ganeshie8
which part are you working on ?
TheQube1
  • TheQube1
@ganeshie8 all three
ganeshie8
  • ganeshie8
|dw:1433182139371:dw|
ganeshie8
  • ganeshie8
check whether the below proportion holds\[\large \dfrac{AC}{EC}~~\stackrel{?}{=}~~\dfrac{BC}{DC}\]
ganeshie8
  • ganeshie8
\[\large \dfrac{12}{9}~~\stackrel{?}{=}~~\dfrac{20}{15}\] \[\large \dfrac{4}{3}~~\stackrel{?}{=}~~\dfrac{4}{3}\] which is true, therefore \(\triangle ABC \sim \triangle EDC\) is true
mathstudent55
  • mathstudent55
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.
mathstudent55
  • mathstudent55
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.
TheQube1
  • TheQube1
@mathstudent55 so using SAS similarity is ow I find out that problem?
mathstudent55
  • mathstudent55
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).
TheQube1
  • TheQube1
what about part (B) and (C)? @mathstudent55

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