Choose the Line command 
.
Tip:
The Line command starts in line mode by default. If you want to start by drawing an arc, press the A key.
Click where you want the line or arc to begin.
Click where you want the line or arc to end. You can use intent zones to specify whether you want to draw a tangent or perpendicular arc.
If you are drawing an arc, click a point on the arc to define the radius.
Tip:
After you draw an arc, the command switches back to line mode automatically. You can switch back to arc mode if you want to draw another arc.
Continue drawing lines or arcs, pressing the A key to switch to arc mode and the L key to switch to line mode.
Click the right mouse button to finish.
Tip:
If you close the shape, the tangent relationship is not applied at the closure point. You can use the Tangent command to apply a tangent relationship.
Tip:
Instead of pressing the L or A keys to switch modes, you can use the Line and Arc buttons on the Line command bar.
You can make the first line or arc tangent or perpendicular to an element. First, move the cursor to the element to which you want to be tangent. When IntelliSketch recognizes a Point On condition, click. Then use the intent zones to indicate if you want the line to be tangent or perpendicular.
Instead of clicking locations, you can type values on the command bar. You can also use a combination of graphic and command bar input.