120 Geometric Dimensioning and Tolerancing 11. Identify at least three required conditions for datum feature simulators. 1) ____________________________________________________________________ ____________________________________________________________________ 2) ____________________________________________________________________ ____________________________________________________________________ 3) ____________________________________________________________________ ____________________________________________________________________ 12. Defi ne simulated datum. _________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ 13. Defi ne actual mating envelope. ___________________________________________ _______________________________________________________________________ _______________________________________________________________________ 14. Defi ne tangent plane. ____________________________________________________ _______________________________________________________________________ _______________________________________________________________________ 15. Given the following drawing and related meaning, fi ll in the blanks at Part I A and B and at Part II A, B, C, and D. Provide the actual dimensions as related to the drawing at Part II B, C, and D. A) B) A) B) D) Part I Part II C)