According to the meaning of “Supplere,” which is to supply, and “Plere” means to fill, we get “when something is supplied to complete a thing.” Now let’s gather all the puzzle pieces and form a precise definition. The word supplementary has its roots in Latin as a combination of words, “Supplere” and “Plere.” The meaning of these two words will set the foundation for the definition of supplementary angles. However, the symbol rad is used to denote radian. A radian is SI derived unit of an angle, where one radian is defined as an angle whose vertex is the center of a circle, while the rays expand, creating an arc whose length equals the radius of a circle.A degree (° the degree symbol) is a measurement of an angle, and it represents rac of a circle.A plane is a two-dimensional surface with zero thickness, zero curvature, and continuous length and width.

An angle is a part of a plane bounded by two rays with the same endpoint (vertex).Also, let us know if there is a specific topic on whom you would like to know more so that we can write about it.įirst, let’s learn about some basics in geometry that will help us to understand better the supplementary angles: Make sure to take your time to investigate the content on our site. The CalCon team developed a tool that does all the work with supplementary angles for you.ĭon’t miss these related posts such as Clock Angle Calculator, or Perimeter of a Triangle, and many more. Also, if you input the value of an angle, it shows its supplementary angle’s value. Supplementary Angles Calculator shows whether two angles are supplementary or not.

Supplementary angle proofs