anonymous
  • anonymous
Look at the figure below: Triangle ABC is a right triangle with angle ABC equal to 90 degrees. The length of AC is 5 units and the length of AB is 4 units. D is a point above C. Triangle ADC is a right triangle with angle DAC equal to 90 degrees and DC parallel to AB. What is the length, in units, of segment CD?
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
1 Attachment
anonymous
  • anonymous
Answer choices: 8 9 6.25 7.25
anonymous
  • anonymous
Please help.

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anonymous
  • anonymous
it's 8
anonymous
  • anonymous
Are u completely sure
anonymous
  • anonymous
99.9%
anonymous
  • anonymous
Could you explain it
anonymous
  • anonymous
https://www.google.com/search?q=pythagorean+theorem+calculator&ie=utf-8&oe=utf-8#q=pythagorean%20theorem%20calc%3A%20find%20a%2C%20b%3D5%2C%20c%3Dn%2Fa&skip=s
anonymous
  • anonymous
plug in numbers
arindameducationusc
  • arindameducationusc
I am here...
anonymous
  • anonymous
but...
arindameducationusc
  • arindameducationusc
Do you know pythagoras theorem?
arindameducationusc
  • arindameducationusc
I can explain it
anonymous
  • anonymous
go ahead
anonymous
  • anonymous
Yeah I know the theorem
anonymous
  • anonymous
@arindameducationusc Do u think the answer is 8 too?
arindameducationusc
  • arindameducationusc
In a right angled triangle, the |dw:1438011564224:dw|
arindameducationusc
  • arindameducationusc
c^2=a^2+b^2
arindameducationusc
  • arindameducationusc
This is the pythagoras theorem.... By this first you find BC
anonymous
  • anonymous
Yeah.. I got it
anonymous
  • anonymous
3
anonymous
  • anonymous
Yeah I figured that was 3 in the beginning ... sorry I forgot to tell u
arindameducationusc
  • arindameducationusc
wait.... I am solving...
anonymous
  • anonymous
omg
anonymous
  • anonymous
sorry
arindameducationusc
  • arindameducationusc
Nothing else is given in the question?
anonymous
  • anonymous
nope
anonymous
  • anonymous
why. what are u looking for
arindameducationusc
  • arindameducationusc
okay ....wait....
anonymous
  • anonymous
...
arindameducationusc
  • arindameducationusc
yes yes
arindameducationusc
  • arindameducationusc
listen ....angle CAB= angle CAD
arindameducationusc
  • arindameducationusc
try using this..... big help
anonymous
  • anonymous
How is that even possible... And could yo please let me know what your final answer was. THnak u soo much
arindameducationusc
  • arindameducationusc
in two parallel lines, a third line when it intersects, the interior opposite angle is equal.... After I solve I will let you know... but even you can try with me
arindameducationusc
  • arindameducationusc
angle CAB=angle ACD
arindameducationusc
  • arindameducationusc
syntax error, sorry
anonymous
  • anonymous
ohhh
anonymous
  • anonymous
k
anonymous
  • anonymous
got it
arindameducationusc
  • arindameducationusc
You got the answer?
anonymous
  • anonymous
no
arindameducationusc
  • arindameducationusc
So, you got the axiom I guess?
anonymous
  • anonymous
what?
anonymous
  • anonymous
This is geometry
anonymous
  • anonymous
im sorry i dont know what that means
arindameducationusc
  • arindameducationusc
Interior angles property?
anonymous
  • anonymous
so the answer is A?
arindameducationusc
  • arindameducationusc
yes answer is A
arindameducationusc
  • arindameducationusc
As both triangles are congruent.
arindameducationusc
  • arindameducationusc
by AAS
arindameducationusc
  • arindameducationusc
and DC has to be a multiple of 4. Got it?
anonymous
  • anonymous
ok
arindameducationusc
  • arindameducationusc
Thanks for the problem, it made my mind refreshed..!!
anonymous
  • anonymous
Got it... thank u soo much for helping me (I would give medal but I dont know how to)
anonymous
  • anonymous
If u want medal tell me how to give it to u (if I can)
arindameducationusc
  • arindameducationusc
Just click on Best Response Button.
anonymous
  • anonymous
oh
arindameducationusc
  • arindameducationusc
ok take care
anonymous
  • anonymous
ok
anonymous
  • anonymous
thx
anonymous
  • anonymous
bye
anonymous
  • anonymous
wow i even said it was A but u didnt believe me
anonymous
  • anonymous

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