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SAI InternationalSchool
                                                       CLASS - IX

               Mathematics
               CHAPTER-6: LINES AND ANGLES-1

               Assessment (Subjective)-1ANSWERS



               SUBTOPIC:Basic Terms and definitions





               1.                                 
                     Find the complement of  of a right angle.
                                                  

               2.                                 
                     Find the supplement of   of a right angle .
                                                  
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               3.    Find the measure of an angle which is 36  more than its complement.

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               4.    Find the value of x for which the angles (2x – 5) and (x – 10)  are the
                     complementary angles.
               5.    Find the angle whose complement is one third of its supplement.

               6     Define the following terms:
                     (i) Angle
                     (ii) Interior of an angle
                     (iii) Obtuse angle
                     (iv) Reflex angle
                     (v) Complementary angles
                     (vi) Supplementary angles

               7.    In the adjoining figure, AOB is a straight line. Find the value of ‘x’.














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