ICSE Board Practice

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ICSE Grade VII - Triangles

Question 1

1.	The name of the triangle is
	△LMN △LMO △MNO △MNP △NOP

Question 2

2.	In the following figure BC ∥ ED, find the values of x and y.
	x = 21° , y = 135° x = 20° , y = 134° x = 23° , y = 137° x = 24° , y = 138° x = 22° , y = 136°

Question 3

3.	In below given figure, find ∠KIM
	92.46° 89.46° 90.46° 88.46° 91.46°

Question 4

4.	The ratio between the base angle and the vertical angle of an isosceles triangle is 7 : 4. Find each angle of the triangle
	A = 38° , B = 72° , C = 70° A = 40° , B = 70° , C = 70° A = 42° , B = 70° , C = 68° A = 38° , B = 70° , C = 72° A = 40° , B = 68° , C = 72°

Question 5

5.	In an isosceles triangle, each base angle is four times its vertical angle. Find each angle of the triangle.
	A = 22° , B = 80° , C = 78° A = 20° , B = 78° , C = 82° A = 20° , B = 80° , C = 80° A = 18° , B = 80° , C = 82° A = 18° , B = 82° , C = 80°

Question 6

6.	One of the two equal angles of an isosceles triangle measures 37°. Find the measure of each angle of the triangle.
	A = 39° , B = 37° , C = 104° A = 37° , B = 37° , C = 106° A = 35° , B = 39° , C = 106° A = 37° , B = 35° , C = 108° A = 35° , B = 37° , C = 108°

Question 7

7.	In the given figure, if HE = FH and EI = IG , find the value of x.
	x = 62° x = 60° x = 61° x = 59° x = 58°

Question 8

8.	Sum of the interior angles in a triangle is
	180° 195° 190° 210° 185°

Question 9

9.	The exterior angles of the triangle are
	∠KJH , ∠LHI , ∠MIJ ∠LKI , ∠MIJ , ∠NJK ∠KLI , ∠LIJ , ∠MJL ∠MLJ , ∠NJK , ∠OKL ∠JKH , ∠KHI , ∠LIK

Question 10

10.	In the given figure, if LO = PL, find the values of x , y , z and t
	x =43.5°, y =26.88°, z =25.85° , t =111.75° x =43.5°, y =24.88°, z =22.85° , t =110.75° x =43.5°, y =24.88°, z =23.85° , t =111.75° x =43.5°, y =22.88°, z =21.85° , t =111.75° x =43.5°, y =24.88°, z =24.85° , t =112.75°

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