Understanding Quadrilaterals Class 8 Worksheet Maths Chapter 3

Multiple Choice Questions (MCQs)

Q1: What is the number of diagonals in a 6-sided polygon?

A) 6
B) 7
C) 9
D) 10

Q2: What will be the sum of interior angles of a polygon having 8 sides?

A) 720°
B) 1080°
C) 1260°
D) 1440°

Q3: Find out the number of sides of a regular polygon whose exterior angles are 60°.

A) 3
B) 4
C) 6
D) 12

Q4: The sides of a quadrilateral are in the ratio of 2:5:4:1. Find out the sum of the smallest and largest angles.

A) 120°
B) 180°
C) 240°
D) 360°

Q5: If the area of a square field is 144 sq m, then find the perimeter.

A) 24 m
B) 36 m
C) 48 m
D) 60 m

Q6: If the base of a triangle is 3 cm and the height is 6 cm, then find the area.

A) 6 sq cm
B) 9 sq cm
C) 12 sq cm
D) 18 sq cm

Q7: A square field has a diagonal of 8 m. Then find out the area of the field.

A) 32 sq m
B) 48 sq m
C) 64 sq m
D) 128 sq m

True/False

Q1: The sum of interior angles of a polygon having 8 sides is 1080°. 

Q2: A regular polygon with exterior angles of 60° has 6 sides. 

Q3: The sum of the smallest and largest angles of a quadrilateral, with sides in the ratio 2:5:4:1, is 240°. 

Q4: The perimeter of a square field, with an area of 144 sq m, is 48 m. 

Q5: The area of a triangle with a base of 3 cm and height of 6 cm is 9 sq cm. 

Q6: A square field with a diagonal of 8 m has an area of 32 sq m. 

Very Short Answer Questions

Q1: Write down the formula of area of rhombus.

Q2:  Can all the angles of a quadrilateral be right angles?

Q3:  Name the quadrilateral whose diagonals are equal.

Q4: Each angle of a square measures ___°.

Q5: How many parallel lines are in a trapezium?

Q6: Which figure is equiangular and equilateral polygons?

Q7: It rhombus also satisfied the properties of a_______.

Q8: If the diagonals of a quadrilateral are perpendicular bisectors of each other then it is always a______.

Q9: the sum of all angles in a quadrilateral is equal to_____ right angles.

Short Answer Questions

Q1: A room has a length of 10 m, breadth of 5m and height of 8 m. Find out the area of the room.

Q2: The length of one side of a rhombus is 6.5 centimeters and its altitude is 10 centimeter. if the length of one side of its diagonals is 26 centimeter find the length of the other diagonal.

Q3: If three angles of a trapezium is 50°, 130° and 120°. Then find the other angle.

Q4: If two adjacent angles of a parallelogram are in the ratio 2:3 Find all the angles of the parallelogram.

Q5: If the angles of a quadrilateral are in the ratio 3:6:8:13. The largest angle is?

Q6: diagonals of a quadrilateral ABCD bisect each other. If A=45°. Then B=?

Q7: The angles of a quadrilateral are x°, x+5°, x+10°, x+25°. Then find the value of x.

You can access the solutions to this worksheet here.