Q Mintz is one of the largest and fastest-growing online platforms dedicated to high-quality Multiple Choice Questions (MCQs) for students, job seekers, and professionals. Our mission is to provide reliable, accurate, and up-to-date learning material that helps users prepare effectively for school exams, competitive tests, departmental assessments, and job interviews.
At Q Mintz, we believe that consistent practice leads to success.
Search
An angle that is less than 90 degrees is called?
A. A right angle
B. An acute angle
C. An obtuse angle
D. A straight angle
Correct Answer Is Option = An acute angle
Notes / Explanation
An angle that is less than ninety degrees is called an acute angle, and this is one of the important kinds of angles studied in the branch of mathematics that deals with shapes, known as geometry. An angle is formed where two lines meet, and it is a measure of the amount of turning between the two lines, measured in units called degrees. Angles are classified into different kinds according to their size. An angle of exactly ninety degrees, which is the angle found at the corner of a square and which represents a quarter of a complete turn, is called a right angle. An angle that is less than ninety degrees, that is, smaller than a right angle, is called an acute angle, so that acute angles are the small, sharp angles. An angle that is greater than ninety degrees but less than one hundred and eighty degrees is called an obtuse angle, so that obtuse angles are the larger, blunter angles. An angle of exactly one hundred and eighty degrees, which forms a straight line, is called a straight angle. And angles greater than a straight angle have their own name as well. Thus the acute angle is the kind of angle that is less than a right angle. Understanding the different kinds of angles and being able to recognise them is a basic and important part of the study of geometry, for angles are involved in the study of shapes, in measurement, in construction and design, and in many other areas. The recognition of an acute angle as one less than a right angle, an obtuse angle as one greater than a right angle but less than a straight angle, and a right angle as one of exactly ninety degrees, is fundamental. Angles are found everywhere in shapes and structures, and the ability to classify and measure them is useful in mathematics and in many practical fields. For PPSC and other competitive examinations, the key points to remember are that an angle that is less than ninety degrees is called an acute angle, that an angle is a measure of the turning between two lines, measured in degrees, that a right angle is exactly ninety degrees and an obtuse angle is greater than ninety degrees but less than one hundred and eighty degrees, and that recognising the different kinds of angles is a basic and important part of the study of geometry.
