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Copy of Sections of Triangular Prisms

Drag the blue points to see the different sections of the triangular prism.
Anthony Or. GeoGebra Institute of Hong Kong

If the blue plane intersects the triangular prism horizontally (or parallel to the base), what 2D shape is formed?

If the blue plane intersects the triangular prism vertically (or perpendicular to the base), what 2D shape is formed?