Q:
# What is a protractor postulate?

**The protractor postulate states that the measurement of an angle between two rays can be designated as a unique number, and this number would be between 0 and 180 degrees.** This postulate enables the use of a protractor to measure angles.

A postulate, also known as an axiom, is a starting point in reasoning. It is a premise assumed to be true so that other facts can be deduced. The concept of angle measurement is one of the most important in geometry, especially in trigonometry, which is primarily concerned with the measurement of angles. Though the protractor postulate only stipulates the 180 degrees of a half-circle, a protractor can be used to measure any of the 360 degrees in which a circle is divided. When the angle does not match a whole degree, the degrees are divided into 60 equal parts called minutes and the minutes into 60 equal parts called seconds.

Protractors are usually made of transparent glass or plastic. Many protractors have half-discs which measure 180 degrees, while others are full discs that measure a full 360 degrees. Bevel protractors have pivoting arms for measuring and marking angles. These are typically used by architects, engineers and other designers. A protractor compass is a navigational device that uses angular measurement for orienteering.

Learn more about Measurements-
Q:
## What is a radian to degree converter?

A: A radian to degree converter is a tool that converts an angle measured in radians into the same angle in degrees. These calculators use a simple formula to... Full Answer >Filed Under: -
Q:
## What does 41 degrees Celsius mean?

A: The expression 41 degrees Celsius is a measurement of temperature equivalent to 105.8 degrees Fahrenheit. Celsius is a unit from the metric system of measu... Full Answer >Filed Under: -
Q:
## How do you convert 60 degrees Fahrenheit to Celsius?

A: A Fahrenheit measurement of 60 degrees can be converted to Celsius by subtracting 32 from 60 and then dividing the difference by 1.8. The equivalent of 60 ... Full Answer >Filed Under: -
Q:
## What is a measurement?

A: A measurement is a quantification of a dimension, such as length or weight, usually represented as a number of standardized units. The type of measurement ... Full Answer >Filed Under: