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Dimensioning angles greater than 180 degrees

From: AutoCAD: Tips, Tricks, and Industry Secrets

Video: Dimensioning angles greater than 180 degrees

When dimensioning an angle, AutoCAD is quick to give you your angular measurements as well as the measurement of the opposite angle or supplementary angles. The problem arises when you want to dimension an angle greater than 180 degrees. At first glance this might not seem possible. In this lesson, we're going to learned how to dimension a reflex angle, an angle that exceeds 180 degrees. On my screen, I have an architectural example. This geometry represent a door that is mounted on a double hinge, so it swings in both directions.

Dimensioning angles greater than 180 degrees

When dimensioning an angle, AutoCAD is quick to give you your angular measurements as well as the measurement of the opposite angle or supplementary angles. The problem arises when you want to dimension an angle greater than 180 degrees. At first glance this might not seem possible. In this lesson, we're going to learned how to dimension a reflex angle, an angle that exceeds 180 degrees. On my screen, I have an architectural example. This geometry represent a door that is mounted on a double hinge, so it swings in both directions.

Let's say I would like to dimension the full range of motion of the door. To do that I'm going to select the Angular Dimension Tool and since my angle is greater than 180, I'm going to press Enter to use the Specifying Vertex option. Specify Vertex allows me to measure the angle by clicking three points. I'll specify the angle vertex using the Intersection objects mapped. I will then click to select this line and this one to find the intersection. I will then grab this end point to identify the first line of the angle and then I'll select this end point to identify the second line. I can then pull out my measurements and click and we can see that this door has a 290-degree range of motion.

In fact I'm going to select this one more time and I'll grab this grip and I'll pull the value up to here so it's little easier to read. More often than that, when you dimension an angle you'll be expecting a measurement of less than 180. However, if you need to dimension a reflex angle it's important to note that AutoCAD can do that too. Just use the Specify Vertex option.

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AutoCAD: Tips, Tricks, and Industry Secrets

66 video lessons · 8520 viewers

Jeff Bartels
Author

 
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  1. 1m 28s
    1. Welcome
      53s
    2. Using the exercise files
      35s
  2. 47m 11s
    1. Adding relevant data to Quick Properties and tooltips
      5m 38s
    2. Creating custom ribbon tabs and panels in AutoCAD
      8m 55s
    3. Creating macro-enabled tools
      10m 29s
    4. Increasing speed with command aliases
      4m 44s
    5. Finding commands and system variables using Auto Complete
      2m 35s
    6. Optimizing the size of palettes
      3m 17s
    7. Accessing drawings using Favorites
      2m 25s
    8. Controlling notification bubbles
      2m 24s
    9. Restoring hidden messages
      3m 53s
    10. Following a blog from within AutoCAD
      2m 51s
  3. 1h 0m
    1. Disabling mode settings on the fly
      3m 28s
    2. Finding hatch boundaries in busy drawings
      3m 32s
    3. Generating boundaries from difficult shapes
      2m 20s
    4. Calculating the overall length of multiple entities
      6m 16s
    5. Calculating the area of multiple shapes
      4m 42s
    6. Flattening geometry to a single elevation
      4m 0s
    7. Trimming all entities to one side of an object
      2m 42s
    8. Eliminating duplicated geometry
      5m 10s
    9. Creating true offsets
      3m 44s
    10. Finding errors when joining multiple entities
      6m 48s
    11. Moving and copying entities using Windows shortcuts
      2m 24s
    12. Solving expressions using the command prompt calculator
      5m 1s
    13. Using the Calculator palette
      10m 25s
  4. 21m 17s
    1. Bringing all text objects to the front
      1m 20s
    2. Underlining single-line text
      1m 21s
    3. Managing numbered and lettered lists
      3m 36s
    4. Creating superscript and subscript text
      3m 18s
    5. Removing formatting from MTEXT
      3m 26s
    6. Using fields to identify who revised a drawing
      3m 10s
    7. Squeezing text into tight spaces
      3m 5s
    8. Hiding extra annotative scales
      2m 1s
  5. 16m 55s
    1. Creating "one-click" dimensions
      1m 52s
    2. Dimensioning angles greater than 180 degrees
      1m 40s
    3. Creating dynamic dimension breaks
      2m 20s
    4. Making linear dimensions act like aligned dimensions
      2m 44s
    5. Finding dimensions with false values
      1m 38s
    6. Creating parent/child dimension styles
      4m 45s
    7. Making dimensions easier to read
      1m 56s
  6. 14m 40s
    1. Making global edits to attribute data
      4m 1s
    2. Clipping references using curved geometry
      2m 21s
    3. Exchanging one block symbol for another
      3m 3s
    4. Using drag-and-drop to insert content
      3m 17s
    5. Creating a block library in two clicks
      1m 58s
  7. 10m 42s
    1. Making global changes to layer names
      3m 19s
    2. Converting all object properties to BYLAYER
      1m 43s
    3. Navigating layer lists using the keyboard
      2m 5s
    4. Producing a hard copy of the layer settings
      1m 34s
    5. Removing stubborn layers
      2m 1s
  8. 25m 1s
    1. Accessing viewports within viewports
      3m 21s
    2. Creating viewports with islands
      6m 5s
    3. Creating legends using the Change Space tool
      3m 55s
    4. Rotating viewport content to match layout
      4m 55s
    5. Importing layouts from template files
      2m 3s
    6. Visualizing multiple design alternates
      4m 42s
  9. 30m 18s
    1. Consolidating backup files into a single folder
      2m 48s
    2. Launching applications from within AutoCAD
      3m 53s
    3. Creating custom linetypes
      5m 9s
    4. Incorporating symbols into custom linetypes
      2m 48s
    5. Salvaging data from a corrupt drawing
      3m 57s
    6. Applying hyperlinks to drawing objects
      3m 34s
    7. Converting drawings from name-based to color-based plot styles
      2m 0s
    8. Identifying the owner of a drawing
      1m 18s
    9. Incorporating drawings into PowerPoint presentations
      4m 51s
  10. 31s
    1. Goodbye
      31s

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