ICSE Board Practice

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ICSE Grade IX - Triangles

Question 1

1.	The side opposite to the vertex M
	LP       OM       NL       LM       MN

Question 2

2.	Which of the following are measures of a scalene triangle ?
	∠L = 64.78° , ∠M = 57.61° , ∠N = 57.61° ∠L = 48.74° , ∠M = 69.98° , ∠N = 61.28° ∠L = 45° , ∠M = 90° , ∠N = 45° ∠L = 65.16° , ∠M = 57.42° , ∠N = 57.42° ∠L = 60° , ∠M = 60° , ∠N = 60°

Question 3

3.	Find the unknown marked angle in the following figure
	x = 55.23° x = 59.23° x = 57.23° x = 56.23° x = 58.23°

Question 4

4.	In the given figure, △GHI in which ∠H = 56.18° and ∠I = 50.31°. GJ and HI bisects each other. Find the value of z
	z = 72.51° z = 75.51° z = 73.51° z = 74.51° z = 71.51°

Question 5

5.	In the given figure, calculate the value of x.
	x = 22° x = 24° x = 23° x = 26° x = 25°

Question 6

6.	Which of the following are measures of an equilateral triangle ?
	∠A = 71.38° , ∠B = 54.31° , ∠C = 54.31° ∠A = 60° , ∠B = 60° , ∠C = 60° ∠A = 58.67° , ∠B = 41.08° , ∠C = 80.25° ∠A = 45° , ∠B = 90° , ∠C = 45° ∠A = 38.16° , ∠B = 90° , ∠C = 51.84°

Question 7

7.	Which of the following are measures of an isosceles right angled triangle ?
	CD = 13 cm , DE = 10 cm , EC = 11 cm CD = 13 cm , DE = 13 cm , EC = 13 cm CD = 13 cm , DE = 13 cm , EC = 18.38 cm CD = 14 cm , DE = 19 cm , EC = 11 cm CD = 14 cm , DE = 10 cm , EC = 12 cm

Question 8

8.	With the data in the figure, △HKI ≅ △IJH by which property?
	SSS Congruency RHS Congruency not congruent ASA Congruency SAS Congruency

Question 9

9.	The vertex opposite to the side   CD
	E D   EF     C

Question 10

10.	In the given figure, find ∠CDB
	68° 67° 65° 69° 66°

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