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### Chapter Summary

This chapter covered all the remaining commands and tools used to modify geometry. These commands include features that reduce the number of points and polygons in an object, features to combine several objects using Boolean operations, commands to drill portions of an object, and the Bridge command to build a connection between objects. This chapter also covered commands in the Detail menu tab, welding points, merging and flipping normals, smoothing curves, and measuring distances.

#### What You Have Learned

• How to simplify an object by reducing its total number of points and polygons.

• How to combine objects using Boolean operations for Union, Subtract, Intersect, and Add.

• How to use the Drill commands to create holes in geometry.

• How to convert objects to subpatches for smooth, flowing surfaces.

• How to merge and weld points together to simplify polygons.

• How to work with normals to flip polygon faces.

• How to flip curves and extend curve lengths.

• How to use the Measure tool to determine the distance between two points.

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