ICSE Board Practice

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ICSE Grade VII - Triangles

Question 1

1.	In a right-angled triangle, the two acute angles are in the ratio 7 : 11. Find these angles.
	A = 34° , C = 54° A = 33° , C = 53° A = 36° , C = 56° A = 37° , C = 57° A = 35° , C = 55°

Question 2

2.	In the given figure, OP ∥ QR, ∠JGP = 57° and GH = IG. Find the measure of x.
	x = 65° x = 67° x = 68° x = 64° x = 66°

Question 3

3.	The name of the triangle is
	△QRS △RST △PQS △PQR △QRT

Question 4

4.	The vertex opposite to the side   EF
	D H   FG     E

Question 5

5.	In below given figure, find ∠BED
	124.05° 123.05° 122.05° 121.05° 120.05°

Question 6

6.	Consider the following figure. State which of the following statements are true
	a) ∠J ≠ ∠K b) ∠L = ∠J c) ∠K ≠ ∠L d) ∠L ≠ ∠J e) ∠K = ∠L f) ∠J = ∠K
	{a,c,d} {f,b,d} {e,a,c} {b,a} {e,c}

Question 7

7.	Find the measures of the three angles suitable to form a triangle?
	∠B = 36.20° , ∠C = 65.90° , ∠D = 87.60° ∠B = 49.60° , ∠C = 39.20° , ∠D = 55.90° ∠B = 46.46° , ∠C = 52.26° , ∠D = 81.28° ∠B = 35.80° , ∠C = 86.40° , ∠D = 39.50° ∠B = 62.80° , ∠C = 110.30° , ∠D = 89.10°

Question 8

8.	In a right-angled triangle if one of the acute angles is 35°, find the measure of the other acute angle.
	56° 57° 55° 54° 53°

Question 9

9.	The point of intersection of the perpendicular bisectors of the sides of a triangle is called
	centroid incentre orthocentre circumcentre median

Question 10

10.	In the given figure, calculate the value of x.
	x = 20° x = 21° x = 19° x = 18° x = 22°

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