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CBSE Grade VII - The Triangle and its Properties

Question 1

1.	In  △EFG, if ∠E = 50° and ∠F = ∠G, find the measure of each of the equal angles of the triangle
	66° 63° 67° 65° 64°

Question 2

2.	Find the unknown marked angle in the following figure
	x = 59.15° x = 60.15° x = 56.15° x = 57.15° x = 58.15°

Question 3

3.	The vertex opposite to the side   US
	W S   UV     T

Question 4

4.	Find the unknown marked angles in the following figure
	x = 111° , y = 145° x = 113° , y = 147° x = 112° , y = 146° x = 110° , y = 144° x = 114° , y = 148°

Question 5

5.	Which of the following are measures of an isosceles triangle ?
	∠P = 68.68° , ∠Q = 59.3° , ∠R = 52.02° ∠P = 53.13° , ∠Q = 59.49° , ∠R = 67.38° ∠P = 38.94° , ∠Q = 70.53° , ∠R = 70.53° ∠P = 60° , ∠Q = 60° , ∠R = 60° ∠P = 47.12° , ∠Q = 90° , ∠R = 42.88°

Question 6

6.	The sides of the triangle are
	BD     ,   DA     ,   AB       DE     ,   EC     ,   CD       CE     ,   EB     ,   BC       BC     ,   CA     ,   AB       CD     ,   DB     ,   BC

Question 7

7.	Calculate the value of x in the following figure
	x = 64.47° x = 65.47° x = 66.47° x = 67.47° x = 63.47°

Question 8

8.	Which of the following are measures of an isosceles triangle ?
	PQ = 14 cm , QR = 13 cm , RP = 11 cm PQ = 11 cm , QR = 13 cm , RP = 11 cm PQ = 10 cm , QR = 15 cm , RP = 12 cm PQ = 12 cm , QR = 12 cm , RP = 12 cm PQ = 11 cm , QR = 15 cm , RP = 18.6 cm

Question 9

9.	Which of the following are measures of an equilateral triangle ?
	∠O = 49.76° , ∠P = 90° , ∠Q = 40.24° ∠O = 47.16° , ∠P = 66.42° , ∠Q = 66.42° ∠O = 45° , ∠P = 90° , ∠Q = 45° ∠O = 47.91° , ∠P = 61.28° , ∠Q = 70.81° ∠O = 60° , ∠P = 60° , ∠Q = 60°

Question 10

10.	Which of the following are measures of a scalene triangle ?
	KL = 12 cm , LM = 11 cm , MK = 12 cm KL = 11 cm , LM = 14 cm , MK = 12 cm KL = 10 cm , LM = 10 cm , MK = 10 cm KL = 15 cm , LM = 15 cm , MK = 21.21 cm KL = 11 cm , LM = 15 cm , MK = 11 cm

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