![]() The Oxford English Dictionary traces the word tesseract to Charles Howard Hinton's 1888 book A New Era of Thought. The term hypercube without a dimension reference is frequently treated as a synonym for this specific polytope. ![]() It is the four-dimensional measure polytope, taken as a unit for hypervolume. The tesseract is also called an 8-cell, C 8, (regular) octachoron, or cubic prism. ![]() The tesseract is one of the six convex regular 4-polytopes. Just as the perimeter of the square consists of four edges and the surface of the cube consists of six square faces, the hypersurface of the tesseract consists of eight cubical cells, meeting at right angles. In geometry, a tesseract or 4-cube is a four-dimensional hypercube, analogous to a two- dimensional square and a three-dimensional cube. The Dalí cross, a net of a tesseract The tesseract can be unfolded into eight cubes into 3D space, just as the cube can be unfolded into six squares into 2D space. If the base triangle's two sides 'a' and 'b' and the included angle 'θ' are given, then its area is found using the formula 1/2 ab sin θ square units.Look up tesseract in Wiktionary, the free dictionary.The formula is also known as Heron's formula. The same formula can be applied for an isosceles triangle or an equilateral triangle. If the type of base triangle is scalene, where all three sides 'a', 'b', and 'c' are given, then its area is calculated using √ square units.If the base triangle is an isosceles triangle with its sides to be 'a', 'a', and 'b' then its area is (b/4) × √(4a 2 - b 2 ) square units.If the base triangle is a right-angled triangle or the prism is called a right triangular prism, with two legs 'b' and 'h' then its area is (1/2) bh square units. ![]()
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