supplementary angles
Pronunciation
Noun
A2 Elementary
Quick answer
Two angles that add up to exactly 180 degrees.
Usage notes
Don't confuse with "complementary angles," which add up to 90 degrees instead of 180.
Test yourself
Which word fits the gap? "Since the two angles form a straight line, they must be _____."
Answer: supplementary angles
In your own words, what does "supplementary angles" mean?
Two angles that add up to exactly 180 degrees.
Learn next at A2
- support To help, encourage, or agree with someone or something, or to physical...
- surprising Causing surprise; unexpected.
- survey A set of questions used to gather information from a group of people.
- survive To continue to live or exist, especially after facing danger, difficul...
- suspense A feeling of excited or anxious uncertainty about what will happen nex...
- sustainable Able to continue for a long time without running out or causing lastin...