Photo AI
A 3D graphic of a trophy for an archery competition is shown on the right - Leaving Cert DCG - Question B-1 - 2011
Question B-1
A 3D graphic of a trophy for an archery competition is shown on the right. The trophy consists of a number of intersecting solids. Fig. B-1 below shows the incomple... show full transcript
Worked Solution & Example Answer:A 3D graphic of a trophy for an archery competition is shown on the right - Leaving Cert DCG - Question B-1 - 2011
Step 1
Draw the plan and elevation of the pyramid
Answer
To draw the plan of the irregular based pyramid, start by sketching the base outline, representing each vertex. Then project the apex vertically above the center of the base. In the elevation view, show the height of the pyramid with the outline of the base projected down. Ensure the correct dimensions align with the figure.
Step 2
Draw the outline and elevation of inclined prism
Answer
For the triangular prism, first draw a horizontal line to indicate the base on the horizontal plane. Then, sketch the triangular face in the plan, ensuring that each side measures 40mm. The elevation of the prism will display one triangular face upright while showing the two other faces receding from the viewer.
Step 3
Complete the drawing, showing all lines of interpenetration
Answer
Start by identifying the intersecting edges of both solids based on their positions. Use dashed lines to represent hidden edges and intersections. Clearly mark the intersecting triangle where the two solids penetrate each other. Also, ensure to annotate the critical points and maintain consistency with the overall dimensions and orientation.