## What is the difference between trim and extend command?

**Extending operates the same way as trimming**. You can extend objects so they end precisely at boundary edges defined by other objects. In this example, you extend the lines precisely to a circle, which is the boundary edge.

## Are lines infinite?

Example: in Geometry **a Line has infinite length**.

A Line goes in both directions without end. … So a Line is actually simpler then a Ray or Line Segment.

## Which object is used to create infinite lines?

Creates a construction line of infinite length. Xlines are useful for creating construction and reference lines, and for trimming boundaries.

## Is an infinite line a shape?

P.S: Shape of earth is oblate spheroid. Yes **infinitely straight line is a circle with infinity as radius**. Every line is a curve, so a circle with very large radius resemble a straight line. Line always have a length of infinity as it can be extended on both side.

## Why is AutoCAD not joining lines?

Causes: **Objects have gaps or do not have connecting points because of different elevations**. Use the UNITS command and increase the precision to maximum. Examining the lines, the Properties palette will show Start Z / End Z or Elevation values, potentially of a minute amount.

## What is the command to join two lines in AutoCAD?

**Just use the “Join” command.**

- Type “ Join” in command section.
- Select the lines to be joined and press enter. That’s it.

## What is reference line?

Reference Lines **allow you to place lines on the plot at specific locations to mark important values**. You could use these to mark control limits or to indicate a trend line for a set of data.

## How many types of lines are there in AutoCAD?

The AutoCAD software package comes with a library of standard linetypes that has **38 different** standard linetypes. Linetypes can be a pattern of dashes, dots, text, and symbols or unbroken and continuous.

## How many types of line methods are there in AutoCAD?

There are **three types** in AutoCAD, Users can draw the line command in AutoCAD. But for work faster in AutoCAD, only two type of method users required to draw a line in AutoCAD.