Question

SO for this table I dont get what will go in the third and fifth slot, like for the first two it would be given, and the fourth would be the same as the one on top. I thought that the fifth would be SSS but I am not quite sure

Answer 1

CA is a transversal of parallel lines. Do you know the properties of transversals?

Answer 2

For 5to be SSS you will need to show that all three sides are congruent. Can you do that?

Answer 3

no i cant

Answer 4

i can only do two side and one angle so it would be sas

Answer 5

@JoannaBlackwelder

Answer 6

Right!

Answer 7

Haha yeah can you help me with some other questions as well

Answer 8

Did you figure out the reason for 3?

Answer 9

no I didnt

Answer 10

Do you know your properties of a transversal through parallel lines?

Answer 11

no i dont think so

Answer 12

can you name one for me, just to see if i might know one

Answer 13

When you have a line passing through two parallel lines, the alternate interior angles are equal.

Answer 14

It is usually just written as alternate interior angles for a proof.

Answer 15

I thought it would be like an angle bisector...

Answer 16

so number three would be alternate interior angle

Answer 17

Yup

Answer 18

oh haha okay so can you help me with two more

Answer 19

I can try!

Answer 20

OKay thank you

Answer 21

Any ideas on 3?

Answer 22

No actually, like what I am having problems on in these types of problems is always going from step one and two to three,,, so I dont have any ideas

Answer 23

i thought it would have been Congruent angles, but idk think that that fits

Answer 24

It is true they are congruent, but that doesn't tell you why.

Answer 25

Are you familiar with vertical angles?

Answer 26

yes

Answer 27

These angles are vertical

Answer 28

so does that mean that there property has somethin to do with being vertical??

Answer 29

And all vertical angles are congruent. :)

Answer 30

Yes

Answer 31

oh so the property would be wored as all vertical angles are congruent or would the be congruent vertical angles

Answer 32

I would just put vertical angles.

Answer 33

okay!! so for the fourth one owuld it be congruent triangles

Answer 34

Congruent triangles is basically the statement, not the reason.

Answer 35

The reason has to be some kind of property that shows the statement you are making to be true.

Answer 36

oh....

Answer 37

:) So, from what you have shown so far and the properties of triangles you know, can you tell me a property that shows that the two triangles are congruent?

Answer 38

CPCTC

Answer 39

Are you talking about 4 or 5?

Answer 40

4

Answer 41

You can never use CPCTC to show triangles are congruent.

Answer 42

OH,but i thought that ws the main purpose of CPCTC

Answer 43

CPCTC says that if you have congruent triangles, then their corresponding parts are congruent.

Answer 44

No, you have to use SSS, SAS, etc to show congruent triangles.

Answer 45

ohh, so this one would be SAS

Answer 46

Have we shown that two sides and the angle in-between are congruent?

Answer 47

no

Answer 48

So can we use SAS?

Answer 49

no

Answer 50

Here are all the options. http://www.mathsisfun.com/algebra/trig-solving-triangles.html

Answer 51

so sss??

Answer 52

How do you get that?