1) A polygon shape is a flat, two-dimensional (2D) shape with straight sides that all join up. Polygons all have ... a) straight sides b) curved sides 2) When all sides and angles of a polygon are equal, we call this ... a) an irregular polygon b) a regular polygon 3) Which shape is regular? a) b) 4) Which shape is irregular? a) b) 5) All the sides of __ _______ _______ are equal. a) an irregular polygon b) a regular polygon 6) If the sides of a polygon are NOT all equal, then the polygon is ________ . a) irregular b) regular 7) Choose the group of irregular shapes. a) b) 8) What does 'symmetry' mean? a) dividing a shape up into many different parts b) dividing a shape up into two identical parts 9) Which shape shows a line of symmetry? a) b) 10) Which shape shows lines of symmetry? a) b) 11) Read the information below carefully. It explains symmetry in regular shapes and includes illustrations to help you understand. Take your time and look closely at the examples. a) I’ve read it carefully and I’m ready to move on. b) I understand the information and I’m ready for the next question. 12) A regular triangle has 3 sides, so it has ? a) 1 line of symmetry b) 2 lines of symmetry c) 3 lines of symmetry 13) A square has all sides and angles equal. It is a regular polygon. It has 4 sides, therefore it has ? a) 2 lines of symmetry b) 4 lines of symmetry 14) The number of lines of symmetry in a REGULAR polygon is equal to ? a) the colour of the shape. b) the number of sides. 15) A rectangle is NOT a regular polygon, because its sides are not equal in length. Which picture shows the correct lines of symmetry for a rectangle? a) b) 16) A regular hexagon will have ? a) 8 lines of symmetry b) 6 lines of symmetry c) 5 lines of symmetry 17) A regular octagon will have ? a) 8 lines of symmetry b) 6 lines of symmetry c) 5 lines of symmetry 18) Which pictures show a line of symmetry? (Select the 3 correct answers). a) b) c) d) e) f)

Regular, Irregular, Lines of Symmetry

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