Definition:Pyramid/Lateral Face
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Definition
The triangular faces of a pyramid which lead to the apex are called the lateral faces of the pyramid.
In the above diagram, $ABQ$ and $DEQ$, for example, form two of the $5$ lateral faces of the pyramid $ABCDEQ$.
Sources
- 1989: Ephraim J. Borowski and Jonathan M. Borwein: Dictionary of Mathematics ... (previous) ... (next): pyramid