A triangular prism has two parallel triangular faces (bases) connected by three rectangular faces. Volume = base area × length; Surface area = perimeter × length + 2 × base area. It appears in architecture, optics, and packaging.
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Pro Tip
Volume of any prism = base area × height (length). This works for triangular, rectangular, hexagonal — any shape base. Just find the cross-sectional area and multiply by the length.
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Did You Know?
Glass prisms split white light into a rainbow (spectrum) because different wavelengths refract at slightly different angles (dispersion). Isaac Newton used a prism in 1666 to prove that white light is a combination of all colors.
References
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