Lilblister
  • Lilblister
Is anyone good at making proofs in geometry? I need help. Im really bad at them :p
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
i can try
Lilblister
  • Lilblister
Ok thanks. I will post the picture
anonymous
  • anonymous
ok :D i am working on a proof in school also lol

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Lilblister
  • Lilblister
1 Attachment
Lilblister
  • Lilblister
Haha! i struggle with these. Thanks for your help btw
anonymous
  • anonymous
well the first one you always just copy the given and write it down
Lilblister
  • Lilblister
Ok the given right.
Lilblister
  • Lilblister
So the first box would say in the statement box : AB=CD, AD=CB Then in the Reason : Given Right?
anonymous
  • anonymous
yep :D
Lilblister
  • Lilblister
Ok good :D
anonymous
  • anonymous
hold on :D
Lilblister
  • Lilblister
Ok :)
anonymous
  • anonymous
i am not quite sure . . . . what the second or third one would be . . . but ik the last one is probably CPCTC and ABD=BCD but that is all i can think of i am sorry :/
Lilblister
  • Lilblister
Thats ok! Thanks for helping me out this far :) @AlexisT20
Lilblister
  • Lilblister
Can anyone else help :o
anonymous
  • anonymous
np :D and ask the math chat see if anyone can
Lilblister
  • Lilblister
Ok thanks!
Lilblister
  • Lilblister
@the_ocean_girl I put a picture of the proof above ^
the_ocean_girl
  • the_ocean_girl
I just did these! Let's get started!
the_ocean_girl
  • the_ocean_girl
So immediately, you can write in the Givens
Lilblister
  • Lilblister
Awesome thanks so much!
Lilblister
  • Lilblister
1 Attachment
Lilblister
  • Lilblister
Is that right so far?
the_ocean_girl
  • the_ocean_girl
i think the givens count as 2 different parts of the proof
Lilblister
  • Lilblister
Ok awesome that makes it a little easier XD
Lilblister
  • Lilblister
Ok i did that.
Lilblister
  • Lilblister
the_ocean_girl
  • the_ocean_girl
Okay so what's another obvious proof
Lilblister
  • Lilblister
ABD=BCD?
the_ocean_girl
  • the_ocean_girl
How about BD= BD
Lilblister
  • Lilblister
Ok. That goes in the next box?
the_ocean_girl
  • the_ocean_girl
Yep, do you know what property that is?
Lilblister
  • Lilblister
No i dont :P sorry im really bad at this lol
the_ocean_girl
  • the_ocean_girl
It's fine we all have our struggles! It's like saying a=a. Which is like a mirror, it reflects. So it's the reflexive property!
Lilblister
  • Lilblister
Oh ok gotcha lol. So that would go in the reasoning box next to the statement box BD=BD right
Lilblister
  • Lilblister
Wait is it the reflexive or reflective?
the_ocean_girl
  • the_ocean_girl
Reflexive and yes that would go in the reasoning box next to BD=BD
Lilblister
  • Lilblister
Ok great
Lilblister
  • Lilblister
Would that last box be ASA or something
the_ocean_girl
  • the_ocean_girl
Did we use any angles to prove the congruence?
Lilblister
  • Lilblister
No. So it would be SSS?
Lilblister
  • Lilblister
Btw sorry if it takes me a little to reply. For some reason i have to refresh then your response shows.
the_ocean_girl
  • the_ocean_girl
It's okay, and yes! It would be SSS. The givens gave us congruent sides, and we proved the third side, BD was congruent by the reflexive property! So the triangles would be congruent by the SSS postulate!
Lilblister
  • Lilblister
Awesome thanks so much! Do u think you could help me with one more?
Lilblister
  • Lilblister
Lilblister
  • Lilblister
@the_ocean_girl
the_ocean_girl
  • the_ocean_girl
Do you know CPCTC?
Lilblister
  • Lilblister
Kind of lol. Its Corresponding parts of congruent triangles congruence or something
the_ocean_girl
  • the_ocean_girl
Corresponding parts of congruent triangles are congruent, that's all your missing! The parts are congruent because the triangles are congruent
Lilblister
  • Lilblister
Oh ok. one sec.
Lilblister
  • Lilblister
So is this correct?
1 Attachment
the_ocean_girl
  • the_ocean_girl
Yep! Looks good!
Lilblister
  • Lilblister
Thanks so much! That was so helpful :D
the_ocean_girl
  • the_ocean_girl
No problem!

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