Question

Is anyone good at making proofs in geometry? I need help. Im really bad at them :p

Answer 1

i can try

Answer 2

Ok thanks. I will post the picture

Answer 3

ok :D i am working on a proof in school also lol

Answer 4

Haha! i struggle with these. Thanks for your help btw

Answer 5

well the first one you always just copy the given and write it down

Answer 6

Ok the given right.

Answer 7

So the first box would say in the
statement box : AB=CD, AD=CB
Then in the Reason : Given
Right?

Answer 8

yep :D

Answer 9

Ok good :D

Answer 10

hold on :D

Answer 11

Ok :)

Answer 12

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 :/

Answer 13

Thats ok! Thanks for helping me out this far :) @AlexisT20

Answer 14

Can anyone else help :o

Answer 15

np :D and ask the math chat see if anyone can

Answer 16

Ok thanks!

Answer 17

@the_ocean_girl I put a picture of the proof above ^

Answer 18

I just did these! Let's get started!

Answer 19

So immediately, you can write in the Givens

Answer 20

Awesome thanks so much!

Answer 21

Is that right so far?

Answer 22

i think the givens count as 2 different parts of the proof

Answer 23

Ok awesome that makes it a little easier XD

Answer 24

Ok i did that.

Answer 25

Okay so what's another obvious proof

Answer 26

ABD=BCD?

Answer 27

How about BD= BD

Answer 28

Ok. That goes in the next box?

Answer 29

Yep, do you know what property that is?

Answer 30

No i dont :P sorry im really bad at this lol

Answer 31

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!

Answer 32

Oh ok gotcha lol. So that would go in the reasoning box next to the statement box BD=BD right

Answer 33

Wait is it the reflexive or reflective?

Answer 34

Reflexive and yes that would go in the reasoning box next to BD=BD

Answer 35

Ok great

Answer 36

Would that last box be ASA or something

Answer 37

Did we use any angles to prove the congruence?

Answer 38

No. So it would be SSS?

Answer 39

Btw sorry if it takes me a little to reply. For some reason i have to refresh then your response shows.

Answer 40

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!

Answer 41

Awesome thanks so much! Do u think you could help me with one more?

Answer 42

@the_ocean_girl

Answer 43

Do you know CPCTC?

Answer 44

Kind of lol. Its Corresponding parts of congruent triangles congruence or something

Answer 45

Corresponding parts of congruent triangles are congruent, that's all your missing! The parts are congruent because the triangles are congruent

Answer 46

Oh ok. one sec.

Answer 47

So is this correct?

Answer 48

Yep! Looks good!

Answer 49

Thanks so much! That was so helpful :D

Answer 50

No problem!