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.

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

The event horizon is a part of a black hole, referring to the region from which even light cannot escape.

This box is perfectly square in shape.

This square box is very simple and beautiful.