Page 38 - Math G4 (second term) booklet_Neat
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Date:…../……./202                                         H.W:          C.W:          Absent:




                                       lesson(3) Understanding Protractors


                                              lesson(4) Measuring angles

              Naming angles :

                     Angle BAC is written as ( ˂ BAC)

                     Its sides are AB and AC .


                     Point A is called the vertex.


           Note :                                                                  A                      c




                             is an angle symbol read as angle








         Example: name the rays , the vertex and angles ?








                                                            1) The Rays are : XY , YZ


                                                            2) The Vertex is Y

                                                            3) The angles :

                                                                - Angle Y ,˂Y

                                                                - Angle XYZ , ˂XYZ
           Y                             Z
                                                                - Angle ZYX , ˂ZYX






















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