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Fittoniya [83]
3 years ago
5

What is the length of CA and which theorem did you use ?

Mathematics
1 answer:
brilliants [131]3 years ago
3 0
I think the length of CA would be 5 because DE is 5 and they are vertical angles that share a vertex so they must be congruent. I would then use the SAS method.
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nydimaria [60]

Answer:

The first four.

Step-by-step explanation:

There are 3 main postulates. SSS, SAS, and AAS. This simply refers to how we prove a triangle congruent. With SSS, all 3 sides must be congruent (either proven or given). AAS is when you have 2 angles congruent with a side next to one of the angles. NOT IN BETWEEN (there's an image as to what I'm talking about below). Finally, SAS. This is when you have a set of angles congruent with sides on each side congruent as well (look at the first four as an example of this.

Any more specific questions, feel free to ask!

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