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Salvador Dali's unusual rendering of the crucifixion, "Christus Hypercubus," employs a tesseract to convey a four-dimensional aspect for this unique event. Our recent advances in modern physics depend heavily upon the realization of even more complex hyperspaces. Scientists universally believe that the universe must eventually wind down and ultimately suffer a "heat death." It has been even suggested that the only hope for intelligent life to escape the final collapse will be by fleeing into hyperspace. (It may be that this could happen sooner than they realize!) How many total degrees are there among the three angles in a triangle? The anticipated answer is 180 degrees. Suppose a couple of us go out to a very large field and lay out an unusually large triangle. When we survey it, we discover that the angles total 200 degrees. What would you conclude? That we erred might be the anticipated answer! Not necessarily. We may simply have encountered the curvature of the Earth. The 180- degree rule we all learned in school applies only to a universe of two dimensions: plane trigonometry. If you take a course in navigation, you will encounter spherical trigonometry. In three dimensions, such as on a sphere, one can encounter triangles with more than 180 degrees. The ostensible violation of our traditional rule is a hint of an additional dimension at work.'* 55 MATRICULATION TO HIGHER DIMENSIONS