He stared at the death mask and trembled with fear.

Looking at his dumb-looking face, it was hard for me to hold back my laughter.

These two planes are coplanar.

He conveyed his thoughts through a face-to-face presentation.

He stated his opinion plainly.

The impression from that sight left a deep mark on his heart.

This is a model of a great icosahemidodecahedron.

He starts talking about himself at every opportunity, causing trouble for the people around him.

He likes to take a walk in the park at dusk.

What is this object?