Answer:
13
Step-by-step explanation:
Diagonals of a rhombus are perpendicular bisector.
Hence, triangle ABE so formed would be a right triangle right angled at E.
Therefore, by Pythagoras theorem:

Answer:
21
Step-by-step explanation:
;)
A is the answer because I had the answer on I ready
No, because a scalene triangle is a triangle with all different sides so if there was a congruent anything it would not be a scalene triangle.
I hope this helped. :)