Select two geometric modeling methods accessible to designers in CAD/CAMa.Solid wire modelingb.Primitive modelingc.Solid modelingd.Wire-frakee.Edge and vertex modelingf.Surface modeling

____________ refer to a model that represent all the dimension of an object external as well as internalWire frame modelConstructive solid geometry methodsComposite transformationNone of these

discuss various 3d modeling techniques in maya

A n_ _ - m_ _ _ _ _ _ _ model provides detailed surfaces and edges within a solid model, in addition to the bordered surfaces.

Modeling with CAD systems offers a number of advantages over traditional drafting methods that use rulers, squares, and compasses. For example, designs can be altered without erasing and redrawing. CAD systems also offer "zoom" features similar to a camera lens, whereby a designer can enlarge certain elements of a model to facilitate inspection. Computer models are typically three dimensional and can be rotated on any axis, much as one could rotate an actual three dimensional model in one's hand, enabling the designer to gain a fuller sense of the object. CAD systems also model cutaway drawings, in which the internal shape of a part is revealed, and illustrate the spatial relationships among a system of parts.To understand CAD it is also useful to understand what CAD cannot do. CAD systems have no means of comprehending real-world concepts, such as the nature of the object being designed or the functions that object will serve. CAD systems function by their capacity to codify geometrical concepts. Thus the design process using CAD involves transferring a designer's idea into a formal geometrical model. Efforts to develop computer-based "artificial intelligence" have not yet succeeded in penetrating beyond the mechanical - represented by geometrical (rule-based) modeling.With CAD, what can be changed without erasing and redrawing?What features do CAD systems offer to make certain elements bigger? With CAD systems, what part of the model can be revealed? What concept can’t CAD systems comprehend? What model can CAD systems transfer from a designer’s idea?

Task 2: Read the text, and then answer the questions with NO MORE THAN THREE WORDS.ADVANTAGES AND DISADVANTAGES OF CADModeling with CAD systems offers a number of advantages over traditional drafting methods that use rulers, squares, and compasses. For example, designs can be altered without erasing and redrawing. CAD systems also offer "zoom" features similar to a camera lens, whereby a designer can enlarge certain elements of a model to facilitate inspection. Computer models are typically three dimensional and can be rotated on any axis, much as one could rotate an actual three dimensional model in one's hand, enabling the designer to gain a fuller sense of the object. CAD systems also model cutaway drawings, in which the internal shape of a part is revealed, and illustrate the spatial relationships among a system of parts.To understand CAD it is also useful to understand what CAD cannot do. CAD systems have no means of comprehending real-world concepts, such as the nature of the object being designed or the functions that object will serve. CAD systems function by their capacity to codify geometrical concepts. Thus the design process using CAD involves transferring a designer's idea into a formal geometrical model. Efforts to develop computer-based "artificial intelligence" have not yet succeeded in penetrating beyond the mechanical - represented by geometrical (rule-based) modeling.With CAD, what can be changed without erasing and redrawing?What features do CAD systems offer to make certain elements bigger? With CAD systems, what part of the model can be revealed? What concept can’t CAD systems comprehend? What model can CAD systems transfer from a designer’s idea?