|
|
|
|
|
|
Symbol | Definition |
---|---|
≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |
A decade is a period of ten years. The word is derived (via French and Latin) from the Ancient Greek: δεκάς (/ðɛkˈɑːs/, transliteration=dekas), which means a group of ten.
A helek is 3⅓ seconds or 1/18 minute.