Page 4 - qua1
P. 4

( + 3) = 3 (3 + 3) = 3 ∙ 3( + 1) = 9 ( + 1)
                   99

                          ( , + 1)

                   .2                           2
                                     2 9–

                                                                       .18

60                        6                                        30                 .12
   60                                      120                     10                 .13

                                  120 30           8
                                    8 =2=

                                                                                      .14

            D          C           D                  CD
    A                          .1 OD                     ODC = 90°
                   ‫ ס"מ‬2  ,DC
                O
                                                                       30°, 60°, 90°
        ‫ ס"מ‬2

B
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