1) Connect the dots and identify the polygon shape obtained. a) Hexagon b) Pentagon c) Heptagon d) Dekagon 2) Why is this shape classified as a polygon? a) The number of sides and vertices are not the same b) Closed geometric shape c) The shape has intersecting sides d) Formed by non-straight lines 3) What is the name of this polygon? a) Heptagon b) Hexagon c) Triangle d) Decagon 4) What are the common geometric properties of this triangle? a) Has three sides of equal length b) Has a total interior angle of 180º c) Has different interior angle sums 5) What are the characteristics of an equilateral triangle? a) Each interior angle is 60º b) Has equal sides c) Classified as a polygon d) Classified as not a polygon 6) Calculate the value of x. a) 30º b) 19º c) 18.75º 7) Does a scalene triangle have a line of symmetry? If it does, how many lines of symmetry does it have? a) No line of symmetry b) 1 c) 2 d) 3 8) Among the statements below, choose the correct answer. a) An acute-angled triangle has angles where 0º < x < 89º b) A right-angled triangle is not 90º c) An obtuse-angled triangle has angles where 90º < x < 180º d) An obtuse-angled triangle has angles where 91º < x < 180º 9) Find the value of x and choose the correct answer. a) 15º b) 30º c) 20º 10) How many lines of symmetry does an equilateral triangle have? a) 2 b) 3 c) 1

Chapter 9: Basic Polygons

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