Where is the diagram? How do we answer without it?
Your question is not stated clearly but I think you are asking to find the sqrt{b} when 81 is the b.
Answer:
i need help too
Step-by-step explanation:
Answer:

Step-by-step explanation:
we know that
An isosceles triangle has two equal sides and two equal interior angles
In this problem
Triangle CDE is an isosceles triangle
because
EC ≅ DE
therefore
----> equation A
Remember that
The sum of the interior angles in any triangle must be equal to 180 degrees
so
----> equation B
---> equation C
substitute equation A and equation C in equation B


