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To help with this geometry question, let me break it down based on the diagram and the instructions provided.

The diagram shows a cuboid (pepejal berbentuk kubus) with vertices labeled \( A, B, C, D, E, F, G, H \) and a right-angled triangular prism removed from it, labeled \( KJL \). We are tasked with drawing two projections of this solid:

1. **(i) Plan of the solid** (Pelan pepejal itu):  
   You need to draw the top view (plan view) of the cuboid with the triangular prism removed. From the top, you will see the outlines of the cuboid and the triangle projected onto the base. Make sure to mark the dimensions (6 cm, 4 cm, etc.).

2. **(ii) Elevation on a vertical plane parallel to \( BC \) as viewed from \( X \)** (dongakan pepajal):  
   This is a side view along the line \( BC \), meaning you would be looking from the side of the shape, specifically from point \( X \). This elevation should show the height of the cuboid and the triangular portion cut out as seen from that direction.

These steps will involve:

- Accurately scaling the cuboid and triangular prism according to the given dimensions.
- Drawing the plan (top view) and elevation (side view) as seen from \( X \).

Would you like further clarification or help drawing the projections?

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**Here are 5 related questions to expand your understanding:**

1. How would the projection change if viewed from a different direction?
2. What are the basic principles of drawing 2D projections of 3D solids?
3. How do you represent hidden lines or edges in technical drawings?
4. What role does scaling play in drawing projections, and how is it applied?
5. Can you apply this method to more complex solids involving curves or irregular shapes?

**Tip:** Always label your diagrams clearly, showing dimensions and any hidden edges with dashed lines to maintain accuracy.

Draw to full scale the plan of the solid and the elevation on a vertical plane parallel to BC as viewed from X.

Understand how to project a cuboid and a triangular prism onto 2D planes. Learn to draw the plan and elevation, including key concepts like scaling and side views, suitable for students in Grades 9-11.

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