Summing Euler's totient function φ (x) over the first + 24 integers gives 180. In binary it is a digitally balanced number, since its binary representation has the same number of zeros as …

The 180-degree angle is a straight angle and forms a straight line. It is exactly half of the full angle (360-degree angle). Learn about the 180-degree angle, its construction, properties in this article.

Learn what a 180 degree (straight) angle is, how to identify it, see real-life examples, and understand its unique properties in geometry for exams or homework.

A straight angle is 180 degrees. This is a straight angle. A straight angle changes the direction to point the opposite way.

180 meaning: 1. a sudden change from a particular opinion, decision, or plan to an opposite one: 2. a sudden…. Learn more.

Dec 5, 2025 · Noun [edit] 180 (plural 180s) (sports) An instance of spinning 180 degrees, so that one is facing in the opposite direction.

Jul 23, 2025 · Answer: An angle of 180° is called a straight angle. This is because it forms a straight line, which logically would be half of a full round. A straight angle cuts a circle in half …

The 180 degree angle is the straight angle. Learn the definition, construction, facts, examples and practice problems on the 180 degree angle.

(figuratively, by extension) A complete change of direction or opinion. She used to like turnips, but she did a 180 and now hates them.

A degree (in full, a degree of arc, arc degree, or arcdegree), usually denoted by ° (the degree symbol), is a unit of measurement of a plane angle in which one full rotation is assigned the …