Polygons - Mathematics Jamb Past Questions and Answers

Question 51 :

• JAMB 2016

The sum of the interior angles of a polygon is a given as 1080^o. Find the number of the sides of the polygon.

A. 5
B. 7
C. 6
D. 8

Question 52 :

• JAMB 2020

A room is 12m long, 9m wide and 8m high. Find the cosine of the angle which a diagonal of the room makes with the floor of the room

A. \(\frac{15}{17}\)
B. \(\frac{8}{17}\)
C. \(\frac{8}{15}\)
D. \(\frac{12}{17}\)

Question 53 :

• JAMB 2020

The sum of the interior angle of pentagon is 6x + 6y. Find y in terms of x.

A. Y = 6 - x
B. Y = 90 - x
C. Y = 120 - x
D. Y = 150 - x

Question 54 :

• JAMB 2021

The angles of a quadrilateral are 5x-30, 4x+60, 60-x and 3x+61.find the smallest of these angles​

A. 5x - 30
B. 4x + 60
C. 60 - x
D. 3x + 61

Question 55 :

• JAMB 2021

Each of the interior angles of a regular polygon is 140°. How many sides has the polygon?

A. 9
B. 8
C. 7
D. 5