supplementary

Everyday

1. Added to something to make it bigger, better or complete; extra. tree →
2. (maths) Supplementary angles are two angles that add up to 180 degrees. tree →

In the lessons

In maths, «supplementary angles» make a straight line (180°); compare «complementary angles», which make a right angle (90°). In school, «supplementary materials» or «supplementary questions» are extra ones. In formal English, a «supplementary question» is an extra question after the first answer. Phrases: «supplementary angles», «supplementary information», «supplementary benefit» (UK, old).

Examples

• Angles of 120° and 60° are supplementary because they add up to 180°. tree →
• If one angle is 110°, its supplementary angle is 70°. tree →
• The teacher gave us a supplementary worksheet for practice. tree →
• The museum offers supplementary guides for children. tree →
• She asked a supplementary question after his answer. tree →
• Vitamins can be supplementary to a healthy diet, not a replacement. tree →

Note

Adjective. Noun «supplement» (an extra thing, e.g. a vitamin supplement or a newspaper supplement). Maths trap: Supplementary = 180° (think «S» for «straight»); Complementary = 90° (think «C» for «corner»).

In Jewish tradition

In maths, «supplementary angles» make a straight line (180°); compare «complementary angles», which make a right angle (90°). In school, «supplementary materials» or «supplementary questions» are extra ones. In formal English, a «supplementary question» is an extra question after the first answer. Phrases: «supplementary angles», «supplementary information», «supplementary benefit» (UK, old).

Examples

• Kalisch in the supplementary paragraphs gives a different attribution ; both are wrong, as an adept cultured clairvoyant could prove. (Sefer Yetzirah, Westcott 1893) tree →

Note

Adjective. Noun «supplement» (an extra thing, e.g. a vitamin supplement or a newspaper supplement). Maths trap: Supplementary = 180° (think «S» for «straight»); Complementary = 90° (think «C» for «corner»).