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7.     There are two set-squares in your box. What are the measures of the angles that are formed at their

               corners? Do they have any angle measure that is common?



        ANSWERS:



                       1.  (b) 2 right angles
                       2.  (b) 2 right angles
                       3.  (a) 1 right angles
                       4.  (c) 3 right angles
                       5.  (a) 1 right angles
                       6.  (a) Right angle; 90°

                          (b) Acute angle; 30°

                           (c) Straight angle; 180°
                       7. One set square is of 30°-60°-90° and another set square is of 45°-45°-90°. The

                              right angle i.e. 90° is common between them.























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