ICSE Board Practice

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ICSE Grade VI - Triangles

Question 1

1.	Find the unknown angle from the following figure
	x = 82.16° x = 81.16° x = 80.16° x = 83.16° x = 79.16°

Question 2

2.	In below given figure, find ∠KHI
	50.00° 53.00° 52.00° 54.00° 51.00°

Question 3

3.	Which of the following are measures of a right angled triangle ?
	∠G = 102.05° , ∠H = 37.26° , ∠I = 40.69° ∠G = 49.32° , ∠H = 55.83° , ∠I = 74.85° ∠G = 60° , ∠H = 60° , ∠I = 60° ∠G = 52.02° , ∠H = 68.68° , ∠I = 59.3° ∠G = 54.46° , ∠H = 90° , ∠I = 35.54°

Question 4

4.	In a right-angled triangle if one of the acute angles is 40°, find the measure of the other acute angle.
	48° 49° 51° 52° 50°

Question 5

5.	Which of the following are measures of an obtuse angled triangle ?
	∠N = 124.23° , ∠O = 30.22° , ∠P = 25.55° ∠N = 45.24° , ∠O = 67.38° , ∠P = 67.38° ∠N = 39.81° , ∠O = 90° , ∠P = 50.19° ∠N = 44.42° , ∠O = 72.62° , ∠P = 62.96° ∠N = 45° , ∠O = 90° , ∠P = 45°

Question 6

6.	Which of the following are measures of an equilateral triangle ?
	LM = 13 cm , MN = 13 cm , NL = 18.38 cm LM = 13 cm , MN = 13 cm , NL = 13 cm LM = 10 cm , MN = 13 cm , NL = 10 cm LM = 13 cm , MN = 15 cm , NL = 19.85 cm LM = 15 cm , MN = 10 cm , NL = 14 cm

Question 7

7.	The vertex opposite to the side   QR
	RS     T Q P

Question 8

8.	Which of the following are measures of a right angled triangle ?
	CD = 15 cm , DE = 25 cm , EC = 15 cm CD = 12 cm , DE = 15 cm , EC = 19.21 cm CD = 14 cm , DE = 11 cm , EC = 15 cm CD = 13 cm , DE = 13 cm , EC = 15 cm CD = 12 cm , DE = 12 cm , EC = 12 cm

Question 9

9.	The exterior angles of the triangle are
	∠RSP , ∠SPQ , ∠TQS ∠QRO , ∠ROP , ∠SPR ∠TSQ , ∠UQR , ∠VRS ∠SRP , ∠TPQ , ∠UQR ∠RQO , ∠SOP , ∠TPQ

Question 10

10.	In the given figure, find ∠CGF
	135° 138° 136° 139° 137°

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