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SAI International School
                                                       CLASS - IX

               Mathematics
               CHAPTER-6: Lines and Angles

               HOME ASSIGNMENT-1


               SUBTOPIC:BASIC TERMS AND DEFINITIONS

               1.  If the complement of an angle is equal to the supplement of the thrice of it. Find
                    the measure of angle.


               2.  What is the measure of an angle which is equal to one-third of its supplement?

                                                                          o
               3.  If AX is a bisector of    BAC such that      BAX = 37 , find the measure of      BAC.

                                                                          o
                                                                                            o
               4.  Two angles are adjacent and form an angle of 135 .The larger is 15  more than
                    three times the smaller. Find the angles.

               5.  For what value of (x + y) from the given figure will ABC be a line? Justify your
                    answer.








               6.             Find the value of ‘x’.























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