Practise the method.Example 1This net folds into a cube. Which labelled face is opposite face D?Cube netCube netSix connected square faces. A, B, C, D are in a row; E is above B and F is below B. Diagram not to scale. Use the labelled measurements.ABCDEFDiagram not to scaleShow worked answerAnswer: BFold the four-face strip around the cube.A is opposite C,B is opposite D, and E is opposite F.Therefore B is opposite D.Example 2A prism has two congruent 10−sided polygonal ends. How many rectangular side faces does its net need?Show worked answerAnswer: 10Each edge of one polygonal end needs one rectangular side face, so there are 10.Example 3Looking directly down on a cube standing on a face, what shape is its top view?Show worked answerAnswer: SquareThe top face of a cube is a square; a face-on top view shows that square.