supplementary angle
n.
The angle or arc that when added to a given angle or arc makes 180° or a semicircle.
supplementary angleEach of the two angles shown is a supplementary angle to the other one.
- housemother
- house mouse
- house music
- House of Burgesses
- house of cards
- House of Commons
- house of correction
- House of Delegates
- house officer
- House of Lords
- house of mirrors
- House of Representatives
- house organ
- housepainter
- house painter
- houseparent
- house party
- houseperson
- house physician
- houseplant
- house-proud
- house-raising
- houseroom
- house seat
- housesit