How to use a protractor to measure an angle The angle at the origin of the protractor? In a group of three or four, use your protractor to measure the angles that you If you didn't do that activity, then go back now and follow the instructions in question 5. You need the four folded angles from the previous activity. Size of the protractor makes no difference to Protractors can be big or small but they all Look at the picture of a typical protractor with its important parts labelled. We have a special instrument for measuring angles. The table by filling in the size of each angle described. Thousands of years ago that a revolution should be divided into 360 equal parts. No one today is completely sure why, but our ancestors decided many The units we use for measuring angles are veryĪncient. You know that we use metres, centimetres, kilometres, millimetres, etc. We need units and measuring instruments in many situations. Soccer field without being able to measure accurately in metres? Imagine if we didn't have units for measuring length.Ĭlothes to the right size without a tape measure? How could an architect designĪ safe and beautiful house without a ruler? How could we lay out a professional The arms and the vertices are in each of your examples. Situations in everyday life where objects are turned through angles? Say what Is the angle at 3 o' clock the same as the angleīook you can make different angles. Angle between the hands at 8 o' clock is the same size as the angle at 4Ĭompare the angle at 2 o' clock with the angleĪt 4 o' clock.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |