5 a Trace each regular polygon. A B P P Mark the centre dot and the corner P. b Find the order of rotational symmetry. Q5c hint c Find the number of lines of symmetry. d What can you say about the number of sides, lines of symmetry and order of rotational symmetry? Cut out the polygon and fold it in half. Perimeter and area 1 These rectangles are drawn on centimetre squared paper. A B C 5 cm a Find the perimeter by counting squares all the way round each shape. b Write the lengths of each side. What do you notice about opposite sides? c Add the lengths together to find the perimeter. Is it the same as in part a? 2 a Sketch each rectangle. A B C 2 cm 4 cm 6 cm 4 cm 4 cm 3 cm b Write the lengths of the other two sides on your diagram. c Work out the perimeter of the rectangle. 3 The perimeter of each rectangle is given. Work out the width. a width perimeter 5 10 m b c width perimeter 5 16 m 4m 5m 215 width Q3 hint perimeter 5 20 m 6m Sketch each rectangle. Label the sides you know.