CBSE Class 8 Mathematics Understanding Quadrilaterals Assignments Set A

Understanding Quadrilaterals

Question. In rectangle PQRS PQ = 8 cm and PS = 6 cm. What is the length of SQ?

Answer : 10 cm

Question. ABCD is a rectangle if AB = 15 cm and AD = 8 cm then find AC

Answer : 17 cm

Question. RENT is a trapezium in which TN||RE. What is the value of x.

Answer : 50°

Question. ABCD is a square with sides 2.4 cm. What is the perimeter of the square?

Answer : 9.6 cm

Question. The perimeter of a square is 196 cm. What is the side of the square?
Answer : 49 cm

Question. What is the total angle sum of a polygon having nine sides?
Answer : 1260°

Question. The side of the square is 16 cm. What is the length of the diagonal?
Answer : 16√2 cm

Question. The perimeter of a parallelogram is 52 cm. If the length of one side is 16 cm. What is the length of adjacent side?
Answer : 10cm

Question. Complete the following :
A quadrilateral can be constructed uniquely if 4 sides and one _________ is known.
Answer : diagonal or one angle

Question. PQRS is a quadrilateral. Find x.

Answer : x = 80°

Question. How many triangles are made while constructing a quadrilateral with four sides and a diagonal? 
Answer : Two

Question. ABCD is a square of side 5 cm. What is the length of its diagonal.
Answer : 5√2 cm

Question. ABCD is a quadrilateral. Find y.

Answer : 35°

Question. Complete the following :
With constructing a quadrilateral with three sides and two diagonals _______ triangles are made on the same base.
Answer : Two.

Question. CLUE is a quadrilateral find w.

Answer : 110°

Question. Name of polygon whose each exterior angle is 60°
Answer : Hexagon

Question. In trapezium ABCD, AB││CD. What is the sum of ∠B and ∠C ?

Answer : 180°

Question. BELT is a rhombus. Find the length of the side of the rhombus

Answer : 5

Question. What is the length of the rectangle if its breadth is 10 cm and the diagonal is 26 cm?
Answer : 24 cm

Question. NICE is a rectangle. What is the length of the diagonal EI.

Answer : 22

Q 1 Name the regular polygon with 8 sides.

Q 2 Find the number of diagonals in the figure given below

Q 4 Find the measure of each exterior angle of a regular polygon of 9 sides.

Q 5 Name the quadrilateral whose diagonals are perpendicular bisector of each other.

Q 6 Name a quadrilateral with exactly one pair of parallel sides.

Q 7 Find x in the following figure.

Click on link below to download CBSE Class 8 Mathematics Understanding Quadrilaterals Assignments Set A