1) What is the formula for the sum of the interior angles of an n-sided polygon? a) (2n- 4) x 180o b) (2n- 4) x 90o c) n x 90o d) n x 180o 2) The sum of the exterior angles of an n-sided polygon is a) 180o b) 720o c) 90o d) 360o 3) In a regular polygon, all sides are equal and all angles are equal. a) True b) False 4) What is the size of ONE interior angle of a regular octagon? a) 180o b) 145o c) 135o d) 360o 5) What is the value of x in the polygon shown? a) 130o b) 105o c) 120o d) 100o 6) What is the size of angle x in the diagram? a) 105o b) 75o c) 70o d) 80o 7) Find the size of angle x. a) 120o b) 70o c) 160o d) 25o 8) What is the value of x in the diagram? a) 45o b) 90o c) 12o d) 22o 9) Donna is creating a triangular garden. Two of the interior angles are 110o and 25o as shown in the diagram. What would be the size of the third interior angle? a) 95o b) 225o c) 45o d) 85o 10) A trapezoidal plot of land is made up of two right angles, one obtuse angle measuring 112o , and a fourth angle. What is the size of the fourth angle? a) 68o b) 78o c) 158o d) 98o

Angle Properties of Polygons

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