The image you provided seems to depict a geometrical diagram, specifically a triangle (likely $\triangle ABC$) with labeled points and lengths, along with a perpendicular drawn from point $A$ to line $BC$, intersecting at $D$. There are also additional markings for angles and side lengths in the image. Based on the markings:

1. $\triangle ABC$ looks like an isosceles triangle with $AB = AC$, and points like $E$, $B$, $G$, and $D$ are marked within the triangle.
2. The base $BC$ is labeled as 12.
3. There are some calculated values, such as $8.42$, $6$, and right angles ($\angle BDG$).
4. The blue, green, and brown lines might be indicating arcs or sections of curves, possibly for another part of the problem.

Would you like a specific calculation based on the information provided in the image, such as determining the height, area, or other geometric properties of this triangle? Let me know if you'd like a detailed step-by-step breakdown.