What Are Dimension Lines?

What are dimensions in drawing?

A dimension is for size and position (of the designed/modeled shape).

• A DIMENSION is a numerical value expressed in appropriate units of measurement and used to define the size, location, orientation, form or other geometric characteristics of a part..

Which best describes the dimensions of a line?

It extends infinitely in both directions. It has only length therefore, it is one dimensional. Hence, the best describes the dimensions of a line is “A line has one dimension because it is made up of all points that extend infinitely in either direction. ‘

What are the 8 rules of dimensioning?

Terms in this set (8)Rule 1: Dimensions should not be duplicated, nor should the same info be given in two different ways.Rule 2: Dimensions should be attached to the view that best shows the contour of the feature being dimensioned.Rule 3: … Rule 4: … Rule 5: … Rule 6: … Rule 7: … Rule 8:

What is true of a line?

A line is defined as a straight one dimensional figure with no thickness and it extends infinitely in both directions. When a point moves in one direction, it gains a size thus forming a line because only one value is required to locate the position of the point in that specific direction (on the line). Learn More.

Do three points determine a line?

Never; Postulate 2.7 states if two planes intersect, then their intersection is a line. … Three non-collinear points determine a plane. Three collinear points determine a line. ANSWER: Sometimes; the points must be non-collinear.

Can dimension lines cross?

Dimension lines should not cross, if avoidable. Dimension lines and extension lines should not cross, if avoidable. Extension lines may cross each other. When extension lines cross extension lines or visible lines, no break in either should be made.

How do you draw a dimension line?

To draw a vertical or horizontal dimension line, click the Horizontal or vertical dimension tool . Click to place the starting point, and drag to where you want to place the endpoint of the dimension line. Move the pointer to position the dimension line, and click to place the dimension text.

What is the difference between dimension lines and extension lines?

Dimension & Extension Lines. Dimension Lines – show the direction and extent of the numerical size. They are thin lines and terminate with an arrowhead at each end. … Extension Lines – are used to extend a surface or a point beyond the outline of the object so that a numerical size can be related to that surface.

What are alphabet lines?

The Alphabet of Lines is a list of line symbols that engineers use in technical drawings to communicate specific shapes, sizes or surfaces. In the Alphabet of Lines, thick, dark lines represent the outline of an object, showing its visible surfaces and edges.

What are the two basic types of dimensions?

There are two classifications of dimensions: size and location.Size dimensions are placed in direct relationship to a feature to identify the specific size.Location dimensions are used to identify the relationship of a feature to another feature within an object.

What is the dimension line definition?

The dimension line is a thin line, broken in the middle to allow the placement of the dimension value, with arrowheads at each end (see diagram below). … An extension line extends a line on the object to the dimension line.

What best describes the dimensions of a plane?

Which best describes the dimensions of a plane? A plane has zero dimensions because it represents a location on the coordinate plane. A plane has one dimension because it is made up of an infinite number of points.