CBSE Class 8 Mathematics Question 7 of 9

Exploring Some Geometric Themes — Question 7

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7
Question
A solid whose profile has a triangular outline.
Answer

A solid whose profile has a triangular outline is a triangular pyramid. As we saw with the elephant, a given solid might have very different profiles from different viewpoints. Can you visualise solids that have the following contrasting profiles? Spend some time on this, and if you are finding it difficult to visualise, you may look around and use objects that are around you, or that you will make in the next section. Feel free to consider viewpoints from any direction, including directly above the object. (Page 77)