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Today, we are moving on to thinking about how we would calculate the perimeter of rectilinear shapes. These are shapes that are made up of straight lines, but unlike squares and rectangles, don't necessarily have pairs of sides that are the same length. For many of these questions, you will have to use the lengths that you are given to calculate the lengths of the other sides before you can calculate the perimeter.

       Start by carefully working through the BBC Bitesize lesson below, paying close attention to any videos. Then, if you're feeling confident, you may wish to jump straight to the independent work, or you might want to log on to the Power Maths textbook to complete the Discover and Share activities as normal - the choice is yours.

       (PLEASE NOTE: You do not HAVE to print out the worksheets, you could just write your answers onto a piece of paper.)