NCERT Grade 9-Constructions-Questions

NCERT Solutions for Class 9 Maths

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Constructions

Exercise 1

1.    Construct an angle of 90° at the initial point of a given ray and justify the construction.

2.    Construct an angle of 45° at the initial point of a given ray and justify the construction.

3.    Construct the angles of the following measurements:

4.    Construct the following angles and verify by measuring them by a protactor:

(i) 75°             (ii) 105°                (iii) 135°

5.    Construct an equilateral triangle, given its side and justify the construction.\

Exercise 2

6.    Construct a triangle ABC in which BC = 7 cm, ∠ B = 75° and AB + AC = 13 cm. 2.

7.    Construct a triangle ABC in which BC = 8 cm, ∠ B = 45° and AB – AC = 3.5 cm. 3.

8.    Construct a triangle PQR in which QR = 6 cm, ∠ Q = 60° and PR – PQ = 2 cm. 4.

9.    Construct a triangle XYZ in which ∠ Y = 30°, ∠ = 90° and XY + YZ + ZX = 11 cm.

10.  Construct a right triangle whose base is 12 cm and sum of its hypotenuse and other side is 18 cm.

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