Critical thinkingThe ability to reason, ask questions, debate and challenge what is presented to you. is the analysis of available facts, evidence, observations, and arguments in order to formForm refers to three dimensional objects. While shapes have two dimensions (height and width), forms have three dimensions (height, width and depth). The overall unity of the visual elements in an art work; it is usually contrasted with content. Form is sometimes used to refer to the three dimensional aspect of an art work, as opposed to shape, which is seen as referring to two dimensional aspects. a judgement by the application of rational, skeptical, and unbiased analyses and evaluation.