\section*{Task 6 - 231036}

The worksheet shows the image \(A^{\prime} B^{\prime} C^{\prime} D^{\prime} S^{\prime}\) of a pyramid \(A B C D S\) in oblique parallel projection, as well as the image \(P^{\prime}\) of a point \(P\) lying on the edge \(C S\), the image \(Q^{\prime}\) of a point \(Q\) lying on the edge \(D S\), and the image \(R^{\prime}\) of a point \(R\) lying on the face \(A B S\).

Construct the image of the intersection figure that results from the intersection of the pyramid \(A B C D S\) with the plane through \(P, Q, R\)!

Describe your construction! A justification and discussion are not required.

![](https://cdn.mathpix.com/cropped/2024_06_06_b85a894aa8dbf722a7b3g-1477.jpg?height=417&width=422&top_left_y=1136&top_left_x=820)
\section*{Construction Instructions:}

1. \(E\) is the intersection of \(A B\) and \(C D\).

2. Draw a line through \(E\) and \(S\).

3. Draw a line through \(P\) and \(Q\).

4. \(F\) is the intersection of the lines \(P Q\) and \(E S\).

5. Draw a line through \(F\) and \(R\).

6. \(G\) is the intersection of the line \(F R\) with the edge \(B S\).

7. \(H\) is the intersection of the line \(F R\) with the edge \(A S\).

The quadrilateral \(P Q H G\) is the desired intersection figure, and the segment \(G H\) is a hidden edge.