4. Using normals, analyze and describe the geometric nature of the intersection of the three planes below. Draw a diagram, showing the three planes, to support your analysis. π 1 : 2 x + y – z + 3 = 0 π 2 : 6 x + 3 y – 3 z + 5 = 0 π 3 : 4 x + 2 y – 2 z + 6 = 0 Do not solve just prove using grade 12 knowledge no matrix or acronyms

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