# What are the planes of projection in Multiview projection?

Space and AstronomyIn multiview projection, the object is viewed perpendicular to the main faces, so that only one face of the object is depicted in each view. **The frontal plane of projection is the plane onto which the front view of a multiview drawing is projected**.

Contents:

## What are the planes of projection in multiview projection quizlet?

**The plane onto which the front view of a multiview drawing is projected**. A plane suspended above and parallel to the top of the object. A plane that is parallel to the right side of the object. The six mutually perpendicular views that are produced by six mutually perpendicular planes of projection.

## What are the 3 planes of projection?

Figure 5-4 shows the three principal (or primary) planes of projection, known as the **VERTICAL, HORIZONTAL, and PROFILE PLANES**. The angles formed between the horizontal and the vertical planes are called the FIRST, SECOND, THIRD, and FOURTH ANGLES, as indicated in the figure.

## What are different planes of projection?

These include the **Frontal Plane, Profile Plane, and Horizontal Plane**: In addition to this, if a plane is placed at any other place, then it is called Auxiliary Plane. These are used to draw inclined surfaces of an object.

## What a projection plane is and how it is used to create a multiview drawing?

A plane of projection (i.e., an image or picture plane) is **an imaginary flat plane upon which the image created by the lines of sight is projected**. The image is produced by connecting the points where the lines of sight pierce the projection plane.

## What is plane of projection in engineering drawing?

Definition of plane of projection

: **a plane that is intersected by imaginary lines drawn from the eye to every point on the object** and that is therefore the plane on which the pictorial representation in perspective is formed.

## What are the three most common views in a multiview drawing?

Although six different sides can be drawn, usually three views of a drawing give enough information to make a three-dimensional object. These views are known as **front view, top view and end view**.

## What plane of projection you can view the top view?

horizontal plane of projection

The top view is projected onto the **horizontal plane** of projection, which is plane suspended above and parallel to the top of the object. The top view of an object shows the width and depth dimensions.

## What is angle projection?

First angle projection is **one of the methods used for orthographic projection drawings** and is approved internationally except the United States. In this projection method, the object is placed in the first quadrant and is positioned in front of the vertical plane and above the horizontal plane.

## Where the plane is placed in third angle projection?

In the third angle projection, the object is placed in the third quadrant. The object is placed **behind the vertical planes and bottom of the horizontal plane**.

## Which of the below views are 3rd angle of projection?

There are three main views in the third angle projection; **Front View**. **Side View**. **Plane View**.

## How many types of auxiliary planes are there?

Auxiliary planes are of _______ types. Explanation: These are **A.V.P (Auxiliary vertical plane) and A.I.P. (Auxiliary inclined plane)**. Auxiliary vertical plane is perpendicular to the H.P. and inclined to the V.P. projection on an A.V.P. is called auxiliary front plane.

## In which projection System plane of projection lies in between observer and object?

**3rd Angle project** is where the 3D object is seen to be in the 3rd quadrant. It is positioned below and behind the viewing planes, the planes are transparent, and each view is pulled onto the plane closest to it. The front plane of projection is seen to be between the observer and the object.

## What is projection projector and plane of projection?

The figure or view formed by joining, in correct sequence, the points at which these lines meet the plane is called the Projection of the object. The lines or rays drawn from the object to the plane are called Projectors. The transparent plane on which the projections are drawn is known as Plane of Projection.

## In which projection is projection lies from the right angle with the projection plane?

In **1st angle projection**, the front view will be below the top view. Explanation: As the object is in first quadrant and the front view projects on vertical plane and top view projects on horizontal plane. And for representing the projection the horizontal plane has to turn 90 degrees in clockwise direction.

## In which projection all projection lies from the right angle with the projection plane?

Detailed Solution

First angle projection | Third-angle projection |
---|---|

Top (plan) view is drawn below the XY line | Top (plan) view is drawn above the XY line |

Left view is projected on the right plane and vice versa |
Left view is projected on the left plane itself |

Followed in India, European countries | Followed in the USA |

## Why 2nd and 4th angle projection is not used?

**Overlapping projection views create confusion in the drawing**. Therefore 2nd angle projection system is not used. Similarly when object is placed in 4th quadrant both top and front view will overlap. Therefore fourth angle projection is also not used.

## In which projection method the plane of projection is assumed non transparent?

**Third Angle Projection Method**

The plane of projection lies between the observer and the object. The plane of projection is assumed to be non- transparent.

## In which angle of projection plane of projection is transparent?

3rd angle projection

The projection planes come between the object and the observer. The plane of projection is taken as transparent in **3rd angle projection**.

## What is a 3rd angle projection?

3rd Angle project is **where the 3D object is seen to be in the 3rd quadrant**. It is positioned below and behind the viewing planes, the planes are transparent, and each view is pulled onto the plane closest to it. The front plane of projection is seen to be between the observer and the object.

## Why do we use 1st and 3rd angle projection?

We consider that horizontal plane rotates in clockwise direction after having projection on it. that’s why we use 1st angle and 3rd angle projection. **because only in this two quadrants we will get the both views after clockwise rotation of horizontal plane**.

## What is third angle projection and first angle projection?

**First Angle Projection – One can imagine the object to be in the first quadrant.** **Third Angle Projection – One can imagine the object to be in the third quadrant**.

## How many types of projection angles are there?

There are two types of drawing in orthographic , **First Angle and Third Angle**.

Different between 1st angle projection and 3rd angle projection in drawing.

First Angle Projection |
Third Angle Projection |
---|---|

the plane of projection assumed to be non transparent | the plane of projection assumed to be transparent |

## How do you read Third angle projection?

Video quote: *What you see from the top down is what you draw. Okay so for a third angle. I like to think of it as if you're unfolding a cardboard box into that traditional flat pack pattern.*

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