HelloTriangle.x3d using X_ITE

X_ITE X3D Browser   Simplest possible triangle definition. Note that head metadata is optional. Provides interesting comparison to OpenGL definitions.

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     Original X3D model: HelloTriangle.x3d
X3D Examples Archive: https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter01TechnicalOverview/HelloTriangleIndex.html

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