Finding the angles in quadrilaterals is now part of the Year 5 Programme of Study. Children need to be able to use a protractor accurately to see that the total adds up to 360 degrees. We have just published a new set of worksheets looking specifically at using a protractor to measure the angles of quadrilaterals. Watch out for those children who slip up and use the protractor incorrectly, for example reading an obtuse angle of 1200 as an acute angle of 600. Avoiding this is one of the main reasons why it is important to estimate the angle before accurately measuring. The pages also encourage children to see that with some quadrilaterals, such as parallelograms, opposite angles are equal.Go to Year 5 Geometry