how to draw an isometric sketch for a cube of dimensions 3*3*3

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$$\begin{gathered} \mathrm{On} \mathrm{a} \mathrm{piece} \mathrm{of} \mathrm{graph} \mathrm{paper} \mathrm{position} \mathrm{your} \mathrm{origin} \mathrm{point} \mathrm{and} \mathrm{draw} \mathrm{your} \mathrm{horizon} \mathrm{line}. \\ \mathrm{Position} \mathrm{your} \mathrm{protractor} \mathrm{and} \mathrm{mark} \mathrm{your} \mathrm{angles} \mathrm{at} 30,90,150 \mathrm{degrees}. \\ \mathrm{Draw} \mathrm{three} \mathrm{lines} \mathrm{AB},\mathrm{ACand} \mathrm{AD} \mathrm{from} \mathrm{origin} \mathrm{A}, \mathrm{each} 3 \mathrm{cm} \mathrm{in} \mathrm{direction} \mathrm{of} \mathrm{above} \mathrm{angles} \mathrm{respectively}. \\ \mathrm{The} \mathrm{basic} \mathrm{isometric} \mathrm{setup} \mathrm{is} \mathrm{complete}. \mathrm{Now} \mathrm{we} \mathrm{will} \mathrm{draw} \mathrm{lines} \mathrm{parallel} \mathrm{to} \mathrm{axes}. \\ \mathrm{To} \mathrm{do} \mathrm{this} \mathrm{we} \mathrm{will} \mathrm{draw} \mathrm{line} 90 \mathrm{degree} \mathrm{to} \mathrm{horizon}. \\ \mathrm{Place} \mathrm{the} \mathrm{centre} \mathrm{of} \mathrm{protractor} \mathrm{at} \mathrm{the} \mathrm{end} \mathrm{point} \mathrm{of} \mathrm{each} \mathrm{of} \mathrm{the} \mathrm{two} \mathrm{lines} \mathrm{except} \mathrm{the} \mathrm{centre} \mathrm{line} \mathrm{AB} \mathrm{drawn} \mathrm{before} \mathrm{and} \mathrm{mark} 90 \mathrm{degrees} \\ \mathrm{Draw} \mathrm{lines} \mathrm{from} \mathrm{respective} \mathrm{end} \mathrm{points} \mathrm{C},\mathrm{D} \mathrm{of} \mathrm{length} 3 \mathrm{cm} \mathrm{in} 90 \mathrm{degree} \mathrm{angle} \mathrm{direction}. \\ \mathrm{Now} \mathrm{join} \mathrm{the} \mathrm{end} \mathrm{points} \mathrm{X} \mathrm{and} \mathrm{M} \mathrm{of} \mathrm{newly} \mathrm{drawn} \mathrm{lines} \mathrm{to} \mathrm{the} \mathrm{end} \mathrm{point} \mathrm{B} \mathrm{of} \mathrm{centre} \mathrm{line} \mathrm{AB}. \\ \mathrm{Again} \mathrm{place} \mathrm{your} \mathrm{protractor} \mathrm{at} \mathrm{end} \mathrm{point} \mathrm{X} \mathrm{and} \mathrm{mark} 30 \mathrm{degrees}. \mathrm{Draw} \mathrm{a} \mathrm{line} 3 \mathrm{cm} \mathrm{in} \mathrm{direction} \mathrm{of} \mathrm{the} \mathrm{angle} \mathrm{and} \mathrm{name} \mathrm{the} \mathrm{end} \mathrm{point} \mathrm{Y}. \\ \mathrm{Join} \mathrm{Y} \mathrm{and} \mathrm{M}. \\ \mathrm{Your} \mathrm{cube} \mathrm{sketch} \mathrm{is} \mathrm{complete}. \end{gathered}$$

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