ICSE Board Practice

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ICSE Grade VI - Triangles

Question 1

1.	In the given figure , if IF ⟂ GH and ∠FGI = 53.94°, find ∠IFG
	38.06° 36.06° 37.06° 35.06° 34.06°

Question 2

2.	The sides of the triangle are
	KM     ,   MJ     ,   JK       KL     ,   LJ     ,   JK       JL     ,   LI     ,   IJ       LM     ,   MK     ,   KL       JK     ,   KI     ,   IJ

Question 3

3.	Find the unknown angle in the following figure
	x = 137° x = 136° x = 134° x = 133° x = 135°

Question 4

4.	The vertical angle of an isosceles triangle is twice the sum of its base angles. Find each angle of the triangle.
	A = 118° , B = 30° , C = 32° A = 120° , B = 28° , C = 32° A = 122° , B = 30° , C = 28° A = 120° , B = 30° , C = 30° A = 118° , B = 32° , C = 30°

Question 5

5.	In the given figure , if IF ⟂ GH and ∠FGI = 42.82°, find ∠HFI
	31.92° 34.92° 32.92° 33.92° 30.92°

Question 6

6.	Find the unknown marked angle in the following figure
	x = 62.75° x = 59.75° x = 63.75° x = 61.75° x = 60.75°

Question 7

7.	Find the measure of each of the two equal angles of an isosceles right-angled triangle.
	46° 47° 43° 45° 44°

Question 8

8.	In the given figure, if HF = HI = IG, find the value of x
	x = 26° x = 30° x = 29° x = 28° x = 27°

Question 9

9.	The exterior angles of the triangle are
	∠PQN , ∠QNO , ∠ROQ ∠QRO , ∠ROP , ∠SPR ∠QPN , ∠RNO , ∠SOP ∠SRP , ∠TPQ , ∠UQR ∠RQO , ∠SOP , ∠TPQ

Question 10

10.	Which of the following are measures of an isosceles right angled triangle ?
	MN = 14 cm , NO = 14 cm , OM = 19.8 cm MN = 12 cm , NO = 10 cm , OM = 11 cm MN = 10 cm , NO = 10 cm , OM = 10 cm MN = 14 cm , NO = 10 cm , OM = 13 cm MN = 12 cm , NO = 18 cm , OM = 10 cm

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