A triangle can be constructed by taking two of its angles as:
(a) 110°, 40°
(b) 70°, 115°
(c) 135°, 45°
(d) 90°, 90°

Solution:

We know that

The sum of all angles of a triangle is 180°

So the sum of any two angles should be less than 180°

(a) 110 + 40 = 150°

(b) 70 + 115 = 185°

(c) 135 + 45 = 180°

(d) 90 + 90 = 180°

Therefore, a triangle can be constructed by taking two of its angles as 110°, 40°.

✦ Try This: A triangle can be constructed by taking two of its angles as:

(a) 120°, 30°

(b) 80°, 125°

(c) 155°, 25°

(d) 70°, 110°

☛ Also Check: NCERT Solutions for Class 7 Maths Chapter 14

NCERT Exemplar Class 7 Maths Chapter 12 Problem 2

A triangle can be constructed by taking two of its angles as: (a) 110°, 40°, (b) 70°, 115°, (c) 135°, 45°, (d) 90°, 90°

Summary:

A triangle can be constructed by taking two of its angles as 110°, 40°.

☛ Related Questions:

• The number of lines of symmetry in the figure given below is: (a) 4, (b) 8, (c) 6, (d) Infinitely ma . . . .
• The number of lines of symmetry in Fig. 12.14 is: (a) 1, (b) 3, (c) 6, (d) Infinitely many
• The order of rotational symmetry in the Fig. 12.15 given below is: (a) 4, (b) 8, (c) 6, (d) Infinite . . . .