#### Answer

$C_1$
hybridization: $sp^3$
geometry: tetrahedral
bond angles: 109.5°
$C_2$
hybridization: $sp$
geometry: linear
bond angles: 180°
$N$
hybridization: $sp$
geometry: linear
bond angles: 180°

#### Work Step by Step

The $C_1$ has four domains (four single bonds). The hybridization is $sp^3$ .The geometry is tetrahedral and the bond angle is 109.5°
The $C_2$ has two domains (one single bond and one triple bond). The hybridization is $sp$. The geometry is linear and the bond angle is 180°
The $N$ has two domains (one triple bond and one lone pair). The hybridization is $sp$. The geometry is linear and the bond angle is 180°