Given:
There are given that the equilateral triangle ABC.
Explanation:
In the question, there are given equilateral triangles.
So,
From the concept of the equilateral triangle:
The equilateral triangle defines when all three sides are equal and all three angles are 60 degrees.
Then,
In the given triangle ABC,:
[tex]\begin{gathered} AB=12 \\ AC=12 \\ BC=12 \end{gathered}[/tex]
So,
For finding the value of DB:
[tex]\begin{gathered} AB=12 \\ AD=\frac{12}{2} \\ DB=\frac{12}{2} \\ =6 \end{gathered}[/tex]
Final answer:
Hence, the side length of DB is 6.
