Polygons
Math ⇒ Geometry
Polygons starts at 7 and continues till grade 12.
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See sample questions for grade 11
A polygon has 18 sides. How many triangles can be formed by joining its vertices?
A polygon has 9 sides. What is the sum of its interior angles?
A regular polygon has 15 sides. What is the measure of each interior angle?
A regular polygon has 20 sides. What is the measure of each exterior angle?
A regular polygon has 9 sides. What is the measure of each exterior angle?
A regular polygon has each exterior angle measuring 24°. How many sides does it have?
Explain why a circle is not considered a polygon.
How many diagonals does a decagon (10-sided polygon) have?
Which of the following is a concave polygon?
(1) Regular pentagon
(2) Star-shaped pentagon
(3) Equilateral triangle
(4) Square
Which of the following is a property of all polygons?
(1) All sides are equal
(2) All angles are equal
(3) The number of sides equals the number of vertices
(4) All are regular
Which of the following is always true for a regular polygon?
(1) It is convex
(2) It is concave
(3) It has unequal sides
(4) It has unequal angles
Which of the following is NOT a polygon?
(1) Triangle
(2) Circle
(3) Pentagon
(4) Hexagon
Fill in the blank: A polygon with 12 sides is called a ______.
Fill in the blank: The number of diagonals in a polygon with n sides is ______.
Fill in the blank: The sum of the measures of the exterior angles, one at each vertex, of any polygon is ______ degrees.
The sum of the interior angles of a polygon with n sides is ______ degrees.
A convex polygon is one in which all interior angles are less than 180°. Yes or No?
A polygon is equiangular but not equilateral. Is it regular? Yes or No?
A regular polygon has all sides and all angles equal. True or False?
If a polygon is equilateral but not equiangular, is it regular? Yes or No?
