Page 95 - Computer Genius Class 07
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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 o  angle possi le is    . That s  hen 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.
                  ence  angle A   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 fi ed upright o er a  at hori ontal line.

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






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                                                                                  Exploring Math with Coding  93
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