Just think about how many corners are in your house, and youвЂ™ll realize how crucial angles are to architecture. Acute angles (and right and obtuse angles) are important in many fields that rely on geometry and the exact measurement of shapes. Understanding the difference between angles is one of the first lessons of geometry, and grasping this basic idea is the starting point for learning more complicated geometric concepts. If you kept widening the angle, it would eventually measure 180В° and would look exactly like a straight line. An angle that is greater than 90В° is called an obtuse angle. If you took one of these angles and moved one line closer to the other, narrowing the space between them, the angle would measure less than 90В° and would be an acute angle.

These angles are all right angles (each measuring 90В°). So, 'supplementary' means 'something when supplied to complete a thing'. The word 'supplementary' comes from two Latin words 'Supplere' and 'Plere' where 'Supplere' means 'supply, whereas 'Plere' means 'fill'. These two angles are called supplements of each other. In a square, the four inside corners are the four angles of the square. Supplementary angles refer to the pair of angles that always sum up to 180. If a basic geometric shape is made of straight lines (sorry, circles), it contains at least one of these three types of angles.

Every possible pair of supplementary angles with integral degree. The three basic kinds of angles are right angles, obtuse angles, and acute angles. The Supplementary Angles ClipArt gallery offers 187 illustrations of supplementary angles. Have you ever used a protractor? If so, you probably remember that you used it to measure angles.

Define supplementary angle 0