Tuesday 3:15-4:30. Homework Check pp. 177-180.

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Presentation transcript:

Tuesday 3:15-4:30

Homework Check pp

Wood Shop Map Correct

Workbook p. 181 Textbook p. 343

A PROJECTION… Is a representation of a three-dimensional object in two dimensions.

ORTHOGONAL PROJECTION… Is a projection in which all of the visual rays from the object are perpendicular to the surface of a sheet of paper.

A MULTIVIEW PROJECTION… Also known as an orthographic projection, is a two dimensional representation of the different views of an object.

Multiview Projections

Bottom view Left view Bottom view Right view Back view Front view Top view

A PERSPECTIVE DRAWING… Represents the three dimensions of an object in the same view.

ISOMETRIC PROJECTION… When an object is drawn so that the lines representing its length, height and depth form 120 degree angles on the paper.

Isometric Projection 120 degrees

OBLIQUE PROJECTION… Is a perspective drawing in which one of the object’s sides is parallel to the sheet of paper, but its depth is represented by parallel straight lines.

Homework pp

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