Polygons and Diagonals

• Vertices

• Exterior angles

• Interior angles

• Sides

At least how many non-collinear segments form a polygon?

• 5

• 4

• 2

• 3

Which of the following is a polygon?

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For a polygon to be convex, all of its diagonals must lie in its ________ ?

• Vertex

• Sides

• Exterior part

• Interior part

Which is the most appropriate classification of the polygon in figure A.

• an equiangular concave pentagon

• an equilateral convex pentagon

• a regular concave pentagon

• a regular convex pentagon

What is a diagonal ?

• a 90-degree angle

• a segment that cuts through a polygon at 45 degrees

• a polygon with four sides

• a segment that connects any two non-consecutive vertices in a polygon

How many diagonals does a nonagon have?

• 27

• 18

• 21

• 28

What is the sum of the interior angles of a pentagon?

• Octagon

• Pentagon

• Quadrilateral

• Hexagon

• 11

• 12

• 7

• 10