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E:\Working\Focus_Learning\Math_Genius-6_(07-11-2024)\Open_Files\13_Chapter_9\Chapter_9
             \ 11-Nov-2024  Bharat Arora   Proof-8             Reader’s Sign _______________________ Date __________





              4.  Assertion (A): The letter ‘C’ has a horizontal line of symmetry.

                  Reason (R): Symmetry in an object means that one half of it is a mirror image of the other half.
              C.  Match Column A with Column B:

                                          Column A                                            Column B
              1. Order of rotational symmetry 5                                    (a)                M

              2. Reflection symmetry of letter M about a vertical mirror           (b)                Q
              3. Letter with vertical and horizontal  line of symmetry              (c)            Square

              4. No line of Symmetry                                               (d)        Regular pentagon
              5. Angle of rotational symmetry 90°                                   (e)               H

              D.  Complete the table.
                       Shapes               Number of lines of symmetry           Order of Rotational Symmetry
              1. Isosceles Triangle

              2. Square
              3. Kite

              4. Equilateral Triangle
              5. Rectangle

              6. Regular Hexagon
              7. Scalene Triangle

              E.  Answer the following:

              1.  Write all the capital letters of the English alphabet which have more than one line of symmetry.
              2.  Two boys are discussing.                                T
                                                                                 P
                  Boy A: QT is the line of symmetry for ∠PQR.
                  Boy B: QS is the line of symmetry for ∠PQR.                        S

                 Who is correct? Give a reason to justify your answer.
                                                                         Q             R
              3.  After knowing about the symmetry, Kiaan drew some lines of symmetry in the figures given below.
                 Did he draw the lines of symmetry correctly? If not, identify his mistakes and rectify them.








              4.  Which letters show rotational symmetry in the word ‘MATHEMATICS’?
              5.  Draw the given shapes and show how many lines of symmetry are there in each:

                 (a)  rhombus            (b)  kite                (c)  pentagon
              6.  A circle has 12 equal sectors as shown here. Colour the sectors so that the figure has:

                (a)  4 lines of symmetry
                 (b)  3 angles of symmetry. Also, write the angles of symmetry.


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