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Angles

                 Whenever two lines intersect at a common point, they form an angle between the point of contact.
                 The two lines from the point of contact are called ‘sides’ of the angle.

                                                  Sides of the
                                                     angles



                                                                                 Angle
                                                                                formed


                                               Point of
                                               Contact



                 Types of Angles


                 The  amount  of space  between  the  sides of an  angle determines  how  big the  angle  is.  They  are
                 measured in ‘Degrees’. An angle of ‘0' degrees will have both sides on top of each other.
                 The highest degree of angle possible is 360. That’s when the first side turns around to meet the
                 second side.

                 1. Acute angles

                 When an angle measures less than 90 degrees, it is called an ‘Acute’ angle.
                 In the image, lines AB and BC form an angle ABC at the point of contact B which measures 45 degrees.
                 Hence, angle ABC is an acute angle.







                                                                     °



                 2. Right angles

                 When an angle measures exactly 90 degrees, it is called a ‘Right’ angle. A right angle is a straight
                 line fixed upright over a flat horizontal line.

                 In the image, lines AB and BC form an angle ABC at the point of contact B which measures 90 degrees.
                 Hence, angle ABC is a right angle.






                                                                   °







                                                                                  Exploring Math with Coding  93
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