1) What is a polygon? a) A closed figure made up of straight line segments b) An open figure made up of straight line segments c) A closed figure made up of curved edges d) A closed figure made up of crossed line segments 2) What is the sum of interior angles for a triangle? a) 120 b) 150 c) 180 d) 200 3) Which picture shows a quadrilateral? a) b) c) d) 4) How many triangles can be fitted into an octagon? a) 5 b) 6 c) 7 d) 8 5) What is the formula for sum of interior angles of a polygon? a) (n-1) x 150 b) (n-2) x 150 c) (n-1) x 180 d) (n-2) x 180 6) What is the name for this polygon? a) Nonagon b) Heptagon c) Decagon d) Hexagon 7) What is the formula to find exterior angle of a polygon? a) 360 ÷ n b) n ÷ 360 c) 360 x n d) n ÷ 360 8) Bees honeycomb has the shape of what polygon? a) Pentagon b) Hexagon c) Heptagon d) Octagon 9) If the sum of the interior angles of a polygon equals 900°, how many sides does the polygon have? a) 7 b) 9 c) 10 d) 12 10) What is a polygon called if the sum of its interior angles equals 1440°? a) Octagon b) Nonagon c) Decagon d) Dodecagon 11) Find the missing angle. a) 75 b) 85 c) 100 d) 45 12) Find the value of X a) 94 b) 25 c) 36 d) 180 13) Solve for x. a) 90 b) 144 c) 124 d) 170 14) Find the value of x a) 313 b) 131 c) 331 d) 133 15) Find the value of x, y and z a) x=115, y=92, z=126 b) x=92, y= 115, z=126 c) x=126, y=92, z=115 d) x=115, y=126, z=92 16) Solve for x. a) 12 b) 10 c) 25 d) 5 17) Solve for a a) 90° b) 180° c) 270° d) 80° 18) Find the value of x+y a) 250 b) 110 c) 45 d) 115 19) What's x? a) 1080° b) 45° c) 135° d) 1440° 20) Find the value of y. a) 110 b) 90 c) 130 d) 120

CHAPTER 4:POLYGONS (2 DIAMOND)

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