Question: Do Lines Have Thickness?

When a point is above HP and behind VP it is in?

Projection of Points • There are basically nine type of projections of point is space : 1.

In FIRST Quadrant (Above H.P.

, In front of V.P.) 2.

In SECOND Quadrant (Above H.P.

, Behind V.P.) 3.

In THIRD Quadrant (Below H.P.

, Behind V.P.) 4..

Can a line have 3 points?

Answer: Collinear points are points on the same line. Three or more points in a plane are said to be collinear if they all lie on the same line.

Does a line have thickness and width?

A (straight) line has length but no width or thickness. A line is understood to extend indefinitely to both sides. It does not have a beginning or end. A line consists of infinitely many points.

How thick are hidden lines?

made up of a series of connecting arcs. continuous and the line weight is usually thick (0.5 – 0.6 mm).

What is a visible line?

A visible line, or object line is a thick continuous line, used to outline the visible edges or contours of an object.

Which lines on a drawing should be the thickest?

The direction of the cutting line is shown with a line called a cutting plane lineHeavy dashed line that shows a theoretical cut through an object.. This is the thickest line that may appear on a drawing. It is made up of a series of 3/4″ long (19mm) and double lines 1/8″ (3.2mm) long that are about 0.040″ (1mm) thick.

When the axis of solid is perpendicular to HP?

Explanation: When the axis of solid is perpendicular to H.P it is indirectly saying that the base is parallel to the horizontal plane so the projection on to it gives true shape of the base and then we can project and find the other dimensions. 4.

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. The lines and symbols used in the Alphabet of Lines are universal, which means engineers around the world use and understand them.

Which line type is thick and black?

Answer. Answer: Object lines and hidden lines.

What has length but no width?

A line has length, but no width or thickness, so it is one-dimensional. surface that extends infinitely along its edges. A plane has length and width but no thickness, so it is two-dimensional.

What is the heaviest line in a drawing?

The heaviest line weight indicates the ground line cut. The next heaviest line weight “profiles the planes closest to the plane of projection” (Ching & Juroszek, 1998, p. 152). Medium line weight indicates distance from picture plane, progressively getting lighter to describe objects further from the picture plane.

What four lines are used to aid in dimensioning?

There are four methods: parallel, running, chain, and combined dimensioning. Some methods of dimensioning a drawing can create an accumulating error.

What is the thickness of a line?

Line thicknesses is a property which can be applied to, and drives the representation of, almost all elements in a drawing, such as lines, curves, dimension lines, etc. (Line thickness cannot be applied to fonts and points). … For Drafting, line thickness is now defined in standards.

What is the use of thick line?

Explanation: Thick-thin-thick are used for cutting planes, dashed thick (wide) is used for surface treatment, zigzag lines are used for long-break lines and continuous thin line is used for dimensions, extensions and projection lines.

How many points determine a line?

A line is defined by two points and is written as shown below with an arrowhead.