# What does R mean in CAD?

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## How do you dimension a radius in AutoCAD?

The Radius dimension tool measures the radius of an arc or circle. To create a Radius dimension, select object 1 then, click point 2 to locate the dimension line. Command line: To start the Radius Dimension tool from the command line, type “DIMRAD” and press [Enter].

## What does Dia mean AutoCAD?

R and dia prefix for radial and Diameter dimensions.

## What are the angular dimensions?

Angular dimensions measure the angle between two non-parallel lines, the angle subtended by an arc, or the angle formed by three selected points. In addition, you can control the layer on which the dimension is created.

## What is a full radius?

A full radius is a radius that smoothly blends into another surface. Full radius is most often specified in a rounded slot feature or a feature that mimics a rounded slot. A full radius sometimes noted as a true radius or full R is outdated language and not part of the current revision of the drawing standard ASME Y14.

## What is the symbol for radius?

Radius is the length from the midpoint of the circle to the outer edge of the circle. The radius is represented by the lowercase letter r.

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## What is a radial dimension?

A radial dimension is a group design object. It allows for the dimensioning of a radius with respect to an arc or circle. The dimension can be placed either internally or externally in relation to the circumference of the arc/circle.

## What is the diameter symbol for AutoCAD?

The AutoCAD diameter symbol code is %%C. You may ask “Why not %%D?” Well, the equally popular Degree symbol gets that honor.

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## What does Theta mean in AutoCAD?

%%c- diameter symbol (theta), generally placed before the numerical value. %%d- degree symbol, generally placed after the numerical value. %%p- plus / minus symbol, generally placed between the main value and a decimal tolerance.

## How do you type phi in AutoCAD?

Symbols can be inserted in text using one of the following methods:

1. In the In-Place Text Editor, right-click and click Symbol.
2. On the expanded Text Formatting toolbar, click Symbol.
3. Copy and paste from the Character Map.
4. Enter the control code or Unicode string. Note: Precede the Unicode string with a backslash ( ).

## How is Angular dimension measured?

Angular dimensions measure the angle between two lines or three points. To measure the angle between two radii of a circle, you select the circle and specify the angle endpoints. With other objects, you select the objects and then specify the dimension location.

## How do you find the angular size of a circular object?

We can generate another simple formula: Angular size in degrees = (size * 57.29) / distance No doubt you can figure out the formulas for minutes and seconds of arc. As stated previously, the simple formulas only work for small angles.

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## How do you use Angular dimension?

To Create an Angular Dimension

1. Click Annotate tab Dimensions panel Dimension. …
2. At the prompt, enter a (Angular).
3. Select one of the following: …
4. Before specifying the dimension line location, you can edit or rotate the text.
5. Click to place the dimension line.