vertex (n.)
- acme
- angle
- apex
- apogee
- bend
- bifurcation
- bight
- brow
- cant
- cap
- chevron
- climax
- coin
- corner
- crank
- crest
- crook
- crotchet
- crown
- culmination
- deflection
- dogleg
- edge
- elbow
- ell
- extremity
- fork
- furcation
- heaven
- heavens
- height
- heights
- hook
- inflection
- knee
- limit
- maximum
- meridian
- nook
- noon
- peak
- pinnacle
- pitch
- point
- pole
- quoin
- ridge
- roof
- sky
- spire
- summit
- swerve
- tip
- top
- utmost
- zag
- zenith
- zig
- zigzag
