The image is a diagram of a triangle, which is a triangular prism with a length of 2.5 meters. The triangle is made up of four sides, with the top half being 1m and the bottom half being 4m. The sides of the triangle are marked with a vertical line, and there is a horizontal line on the right side of the image. The background is a light beige color, and the triangle appears to be drawn on a piece of paper.