ICSE Board Practice

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ICSE Grade VI - Triangles

Question 1

1.	Calculate the value of the lettered angle in the following figure
	x = 61.17° x = 60.17° x = 62.17° x = 58.17° x = 59.17°

Question 2

2.	In the given figure, find ∠JHI
	106° 102° 103° 104° 105°

Question 3

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

Question 4

4.	In  △CDE, if ∠C = 63° and ∠D = 67°, find the measure of ∠E
	E = 50° E = 48° E = 49° E = 52° E = 51°

Question 5

5.	Each of the two equal angles of an isosceles triangle is half the third angle. Find the angles of the triangle
	X = 45° , Y = 90° , Z = 45° X = 45° , Y = 88° , Z = 47° X = 43° , Y = 92° , Z = 45° X = 43° , Y = 90° , Z = 47° X = 47° , Y = 90° , Z = 43°

Question 6

6.	Which of the following are measures of an obtuse angled triangle ?
	∠D = 39.81° , ∠E = 90° , ∠F = 50.19° ∠D = 45° , ∠E = 90° , ∠F = 45° ∠D = 76.33° , ∠E = 55.3° , ∠F = 48.37° ∠D = 74.85° , ∠E = 55.83° , ∠F = 49.32° ∠D = 134.62° , ∠E = 20.85° , ∠F = 24.53°

Question 7

7.	Find the measures of the three angles suitable to form a triangle?
	∠H = 59.41° , ∠I = 67.97° , ∠J = 52.62° ∠H = 96.80° , ∠I = 90.60° , ∠J = 42.50° ∠H = 89.80° , ∠I = 115.20° , ∠J = 115.10° ∠H = 31.30° , ∠I = 61.30° , ∠J = 33.60° ∠H = 56.40° , ∠I = 109.60° , ∠J = 103.90°

Question 8

8.	In below given figure, find ∠ECG
	109.83° 108.83° 110.83° 112.83° 111.83°

Question 9

9.	Consider the following figure. State which of the following statements are true
	a)   EF     =   FG     b)   FG     ≠   GE     c)   EF     ≠   FG     d)   GE     =   EF     e)   GE     ≠   EF     f)   FG     =   GE
	{b,c,d} {f,a,d} {e,b,c} {a,b} {e,c}

Question 10

10.	The vertex opposite to the side   NL
	M P L   NO

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