1. The problem asks to draw the plan view of a 3D shape given its front elevation and side elevation. 2. The front elevation shows a red right triangle on a square grid. 3. The side elevation shows a red rectangle on a square grid. 4. The plan view is the view from above, showing the shape's footprint on the horizontal plane. 5. To draw the plan view, we combine the widths and depths from the front and side elevations. 6. The front elevation gives the height and width, while the side elevation gives the height and depth. 7. Since the front elevation is a right triangle, the width corresponds to the base of the triangle. 8. The side elevation is a rectangle, so the depth is the length of the rectangle. 9. The plan view will be a right triangle footprint with the base equal to the width from the front elevation and the depth equal to the length from the side elevation. 10. On the empty grid, draw a right triangle with the base along one axis equal to the front elevation's base length and the height along the other axis equal to the side elevation's rectangle length. This completes the plan view drawing based on the given elevations.