The betel palm, a species of palm tree found primarily in Asian countries, yields a seed known as a betel nut. Natives of the Asian and Indian countries where this tree is found use the nut much like those in Western countries use chewing tobacco or snuff.ixing it with spices or tobacco seems to improve its taste, but flavored betel nut is not always embraced in certain Asian countries. Long-term chewing can stain the user's teeth black and create a number of health problems requiring serious medical intervention.
Symbolically, the minor and major arcs are denoted by the following: The semicircle represents an arc whose endpoints coincide with endpoints of the diameter. The semicircle is represented by three points using the same methodology to represent a major arc.
Arcs are measured in degrees. This is not the same as the length of an arc, which depends on the size of the circle. The measure of a minor arc is defined as the measure of its central angle: The measure of a major arc is 360o minus the measure of the corresponding minor arc: Lengths of Arcs. The measure of an arc is given in degrees. The length of an arc depends on the size of the circle and is measured in standard units, such as inches, centimeters, etc. The circumference of a circle is an arc measuring 360o. The length of the circumference is given by the formula: C = Ïd, where d is the diameter of the circle.