Welcome to your Grade 9 Mathematics chapter 5
After carefully reading the following 30 questions, choose the correct answer.
1.
A simple closed plane figure formed by three or more line segments joined end to end is called a:
2.
In a convex polygon, the measure of each interior angle is:
3.
What is the sum of the measures of interior angles of an n-sided polygon?
4.
For any n-sided polygon, the sum of the measures of the exterior angles is:
5.
At each vertex of a polygon, the sum of the external and internal angles is:
6.
A regular polygon is defined as a convex polygon where:
7.
What is the measure of each exterior angle of a regular n-sided polygon?
8.
Find the measure of each interior angle of a regular octagon (8 sides).
9.
If a regular polygon has a perimeter of 143 units and each side is 11 units long, how many sides does it have?
10.
What is the perimeter of a square with a diagonal of 52 cm?
11.
How many sides does a regular polygon have if the measure of an interior angle is 165∘?
12.
In a regular polygon, what is the measure of the central angle?
13.
Which polygon has at least one interior angle greater than 180∘?
14.
The common end point of any two sides of a polygon is called:
15.
What is the measure of each exterior angle of a regular pentagon?
16.
Is it possible to have a regular polygon with each exterior angle being 50∘?
17.
What is the sum of the interior angles of a hexagon (6 sides)?
18.
In a regular polygon, if the number of sides n=3, what is the measure of each interior angle?
19.
For a regular polygon, the exterior angle and interior angle are:
20.
What is the minimum possible measure of an interior angle in a regular polygon?
21.
What is the maximum possible measure of an exterior angle in a regular polygon?
22.
The sum of interior angles of a pentagon is:
23.
A triangle is a polygon with how many sides?
24.
In a regular octagon, what is the measure of the exterior angle?
25.
If the sum of the interior angles of a polygon is 900∘, how many sides does it have?
26.
What is the measure of each interior angle of a regular hexagon?
27.
A square is a regular polygon with how many sides?
28.
The exterior angle of a regular n-sided polygon is 40∘. Find n.
29.
What is the sum of exterior angles for a decagon (10 sides)?
30.
Each interior angle of a regular n-sided polygon is calculated by:
