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                 \ 19-Nov-2025  Bharat Arora   Proof-9             Reader’s Sign _______________________ Date __________





                   2.  look at the clocks shown below. name the type of angle formed by the hour and
                       minute hands.
                       a.                       b.                      c.                       d.        12
                              11  12  1                   12                      12                    11     1
                                                       11    1                 11    1
                             10        2                                               2               10        2
                                                     10        2             10
                            9          3             9          3            9          3             9          3
                             8         4             8         4             8         4               8         4
                               7    5                                          7     5                   7     5
                                  6                    7  6  5                    6                         6
                          ___________              ___________             ___________              ___________

                       e.                       f.                      g.                       h.
                              11  12  1                11  12  1               11  12  1                11  12  1
                            10        2              10        2             10        2              10        2
                            9          3             9          3            9          3             9          3
                             8        4              8         4             8         4               8        4
                               7    5                  7     5                 7     5                   7    5
                                  6                       6                       6                         6
                          ___________              ___________             ___________              ___________
                   3.  Classify each angle according to its measure.


                        a.  30°            b.  95°              c.  108°            d.  180°             e.  90°

                        f.  360°           g.  80°              h.  125°             i.  25°              j.  265°

                   4.  using  a protractor,  determine which  of the two  angles  in  each  of the following
                       pairs is greater and classify them as acute, right, obtuse, straight or reflex angles.


                       a.           A               D                   b.                        D





                                                                             A       B       C        E           F
                           B           C        E            F

                       c.           A                                   d.
                                                             Z
                                                                                    N                     Q



                                                                             M            O        P             R
                          B           C         X           Y

                  5.  Have you ever built houses using the hardcovers
                       of notebooks or cardboard  pieces?  look at the
                       angles marked in the house and classify them as
                       acute, obtuse or right angles.

                         Acute angle        Obtuse angle         Right angle








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