# Create and Edit Equations in the Equations Dialog Box

You can use the Equations dialog box to create, edit and delete equations, and to assign equations to different configurations of a part or assembly. Global variables and equations are available in one place, and flyout menus help you create global variables and equations more quickly and accurately.

Contents

**Adding an Equation**

You can add an equation to a part or assembly using the Equation View, Dimension View, or Ordered View.

**Adding a Sketch Equation**

You can add an equation to sketch entities using the Sketch Equation View.

**Editing an Equation**

**Deleting an Equation**

**Operators, Functions, and Constants**

**Best Practice for IF Functions in Equations**

When you use the

`IF`

function and assign a value to the`Global Variable`

or the value to compare with, you may get an unexpected result because of the floating-point math done by equations.**Specifying Units of Measurement**

You can specify the units of measurement for global variables, and for the values and equations that define the global variables. You can define the units in the Equations and Modify dialog boxes for dimensions, and in PropertyManagers that support equations.

**Using the Measure Option**

**Changing Dimensions by Configuration**

If a part has several configurations, you can decide whether changes to a dimension affect one configuration, all configurations, or selected configurations.

**Suppressing Features in the Equations Dialog Box**

You can define equations that conditionally suppress features. You can also suppress features directly in the Equations dialog box.

**Visual Basic If Function**

You can also use the Visual Basic If function when specifying a model dimension.

**Parent topic**Equations