Page 25 - STEPS MATHEMATICS 4A
P. 25

Triangle angles                                               or use  RMA
                                                                            1  cm  squared  paper





                                                                              2cm



                                      You  can  use                  -2em
                                     squared  paper
                                 to  draw  right  angles.


              Draw right angles on  squared paper to match these.
          a                                                   C
                2cm                   4cm
                                                             2cm

        3cm                                          3cm
                                                                                6cm




                                                                      8cm




                                         1cm      0   1cm
                        5cm
                                                           1cm                                4cm

             Measure and then draw these in the same way.











             Add one line to change each  right angle into
             a  right-angled triangle

             Beside each triangle, write isosceles or scalene

          REMEMBER

         An  isosceles triangle has two sides of the same length

         A scalene triangle has  no sides of the same length.
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