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# Classify the ${118^ \circ }$ angle as acute, obtuse, straight, right, zero or complete angle.

Last updated date: 20th Jun 2024
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Hint: An angle may be defined as the figure formed by two rays which are meeting at a common endpoint. An angle is represented by the symbol ∠. The two sides of an angle are termed as arms and the end point of the angles where the two rays are meeting is called vertex.

The broad classification of angles is given below:
Acute angle: An acute angle refers to an angle that is less than ${90^ \circ }$ but larger than ${0^ \circ }$. Therefore, an acute angle is an angle that measures between ${0^ \circ }$ and ${90^ \circ }$. For examples: ${30^ \circ }$, ${60^ \circ }$or ${15^ \circ }$.
Obtuse angle: An obtuse angle is always larger than ${90^ \circ }$ but less than ${180^ \circ }$. In other words, the angle that lies between ${90^ \circ }$ and ${180^ \circ }$ is called an obtuse angle. For example: ${95^ \circ }$, ${120^ \circ }$or ${155^ \circ }$
Straight angle: A straight angle is the angle that is equal to ${180^ \circ }$. It points in the opposite way. It looks like a straight line.
Right angle: A right angle is an angle which is exactly equal to ${90^ \circ }$. It corresponds to a quarter of a circle.
Zero angle: The smallest angle with a measure of ${0^ \circ }$ is called a zero angle. Here, both the arms of the angle overlaps one another.
Complete angle: A full angle or round angle, is an angle which is equal to ${360^ \circ }$, corresponding to the central angle of an entire circle. Four right angles or two straight angles equal to one full angle.

Based upon the above classification, the given angle of ${118^ \circ }$ will be an obtuse angle as it lies between ${90^ \circ }$ and ${180^ \circ }$.

Note: The angles in the ascending order can be written as:
Zero angle < Acute angle < Right angle < Obtuse angle < Straight angle < Complete angle.
Zero angle is the smallest angle and complete angle is the largest angle.