What kind of angle is 120 degrees

There are various types of angles in geometry, like, acute angle, obtuse angle, right angle, reflex angle, and straight angle. There are some special types of angle pairs too. Let us learn about the different types of angles in detail.

The space formed when two rays meet each other at a common point is called an angle. Angles can be classified both on their measurement and the way they are rotated. Based on the measurement, angles are classified as follows. Observe the following figure to relate to the different kinds of angles explained below. The angle formed by the ray s PQ and QR in the figure is an obtuse angle. At a straight angle, the two rays are opposite to each other. A straight angle can be formed by combining two adjacent right angles or in other words two right angles make up a straight angle.

The next type of angles is based on the direction of rotation of one arm of an angle. When two lines intersect and meet at a point, an angle is formed. Let us discuss the angle types on the basis of rotation. Positive angles are the ones in which angles are rotated from the base in the counter-clockwise or anti-clockwise direction. Negative angles are the ones in which angles are rotated from the base in the clockwise direction.

For two angles to be adjacent angles , the following conditions should be true. Here, one angle is the complement of the other angle. These are "fat" angles that are very wide. Straight - any angle which measures exactly degrees. This isn't even really an angle Vertical Angles - Two angles formed by intersecting lines. They can not be adjacent but are always equal in measure.

They are across from one another in the corners of the "X" formed by the lines. In the above picture, angles 1 and 3 and angles 2 and 4 are vertical because they are across from each other.

Now, angles 1 and 2 and angles 3 and 4 are NOT vertical angles. We can say angles A and B are complementary. Supplementary Angles - Two angles whose measures add up to degrees. The figure below illustrates an acute angle. The figure below illustrates a right angle. The figure below illustrates an obtuse angle. The figure below illustrates a straight angle. The figure below illustrates a reflex angle.

It is also called a full angle. The angles that are measured by the counter-clockwise or anti-clockwise direction are called positive angles. Whenever two angles are said to be complementary, each of the angles is said to be the complement of the other. When two angles are supplementary, each angle is said to be the supplement of the other.

The pair of supplementary angles may or may not have a common vertex, but the linear pair of angles must always have a common vertex. Adjacent angles are two angles that have a common vertex and a common side but do not overlap.

They share the same vertex and the same common side. When two lines intersect, the opposite angles are equal. A line that intersects two or more lines at different points is known as a transversal. The angles formed at the point of intersection are,. The given angle i. Hence, the angle in the given figure is a reflex angle. Here, we need to find the complementary of it.

Here, we need to find a supplementary of it.