ICSE Board Practice

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ICSE Grade VIII - Lines and Angles

Question 1

1.	Which of the following is a straight angle?
	310° 360° 90° 180° 0°

Question 2

2.	Find the interior angles in the given figure
	∠1 , ∠5 ; ∠2 , ∠6 ; ∠3 , ∠7 ; ∠4 , ∠8 ∠3 , ∠5 ; ∠4 , ∠6 ∠1 , ∠2 ; ∠2 , ∠4 ; ∠4 , ∠3 ; ∠3 , ∠1 ; ∠5 , ∠6 ; ∠6 , ∠8 ; ∠8 , ∠7 ; ∠7 , ∠5 ∠1 , ∠2 , ∠7 , ∠8 ∠3 , ∠4 , ∠5 , ∠6

Question 3

3.	Which of the following angles form a linear pair?
	(∠BOC,∠COD) (∠AOB,∠BOC) (∠DOE,∠EOA) (∠COD,∠DOE)

Question 4

4.	In the given figure, l ∥ m and n ∥ o and p ∥ q . Find the values of {e,f,g,h,i,j}
	48 ° , 70 ° , 62 ° , 70 ° , 62 ° , 48 ° 62 ° , 70 ° , 62 ° , 48 ° , 48 ° , 70 ° 48 ° , 48 ° , 70 ° , 62 ° , 62 ° , 70 ° 48 ° , 62 ° , 70 ° , 70 ° , 62 ° , 48 ° 62 ° , 48 ° , 70 ° , 62 ° , 48 ° , 70 °

Question 5

5.	Which of the following is a reflex angle?
	360° 0° 90° 22° 314°

Question 6

6.	In the given figure, s , t , u , v , w , x  are lines in a plane. By looking at the figure, which of the following are true?
	a) s is the transversal of u & w b) s ∥ t c) v is the transversal of s & t d) x is the transversal of u & s e) w is the transversal of u & v f) s ∥ v
	{f,c} {a,f,d} {a,b} {a,e,b} {b,c,d,e}

Question 7

7.	Find the interior alternate angles in the given figure
	∠1 , ∠2 , ∠7 , ∠8 ∠1 , ∠5 ; ∠2 , ∠6 ; ∠3 , ∠7 ; ∠4 , ∠8 ∠3 , ∠6 ; ∠4 , ∠5 ∠3 , ∠4 , ∠5 , ∠6 ∠1 , ∠8 ; ∠2 , ∠7

Question 8

8.	Which of the following is the largest angle in the given figure?
	∠KON ∠KOL ∠KOM ∠LOM ∠LON

Question 9

9.	The following angle represents
	acute angle reflex angle zero angle straight angle complete angle

Question 10

10.	In the given figure l ∥ m. Find the value of 'z'
	8 12 11 14 10

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