Answer:
I thank its b not sure sorry if its wrong
Given:

To prove:

Proof:
In
,
because Given
because Given
because Reflexive property.
Corresponding sides of both triangles are congruent. So,
because SSS
Therefore, the required missing values are: Given,
, Reflexive property ,
, SSS respectively.
Answer: there you go
Step-by-step explanation:
Answer:

= 7.071067812
Step-by-step explanation:
hope this helps