Assertion: typical periscope | /r/CapableOf | use two mirrors
Facets:
Source sentences:
text: A typical periscope uses two mirrors at 45 degree angles to the direction one desires to see.
text: A typical periscope uses two mirrors at 45 degree angles to the direction one desires to see.
text: A typical periscope uses two mirrors at 45 degree angles to the direction one desires to see.