The shape of the nitrogen atom in CH₃NHCH₃ is:
In CH₃NHCH₃, nitrogen has three sigma bonds (two C, one H) and one lone pair, giving a pyramidal shape due to sp3 hybridization, as per the PDF’s structure.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Chemical Reactions - Alkylation, Acylation and Electrophilic Substitution