180 (number) Did You Mean 180?

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180 (one hundred eighty) is the natural number following 179 and preceding 181.

List of numbers -- Integers AND1lt;AND1lt; 100 110 120 130 140 150 160 170 180 190 >>
Ordinal	One hundred and eighty
Cardinal	180th
Factorization	$2^2 \cdot 3^2 \cdot 5$
Roman numeral	CLXXX
Binary	10110100
Duodecimal	130
Hexadecimal	B4
Vigesimal	90

In mathematics

One hundred eighty is the sum of six consecutive primes (19 + 23 + 29 + 31 + 37 + 41), as well as the sum of eight consecutive primes (11 + 13 + 17 + 19 + 23 + 29 + 31 + 37).

Using degrees (°) to measure angles, 180° is called straight angle, and makes a semicircle. 180° is equivalent to π rads. In normal space, the interior angles of a triangle add up to 180°.

180 is a Harshad number in base 10.

In other fields

180° also means antipode. For example, a "180-degree change" indicates a radical change.
Interstate 180, the designation of some spur routes of Interstate 80.
The maximum possible score in one turn at darts.
In astronomy, when two planets are 180 degrees apart, they are said to be in opposition. In astrology, this is an aspect that is considered to be negative in influence.