In Fig. 5.21, ∠AOC and ∠BOC form a pair of
a. vertically opposite angles
b. complementary angles
c. alternate interior angles
d. supplementary angles

Solution:

Given, the angles are ∠AOC and ∠BOC

We need to find the nature of the given angles.

Form the figure,

O is a point on the line AB.

We observe that ∠AOC and ∠ BOC lie on the same line.

We know that the linear pair of angles is always equal to 180 degrees.

So,∠AOC + ∠ BOC = 180°

When the sum of the measures of two angles is 180°, the angles are called supplementary angles.

Therefore, the angles ∠AOC and ∠ BOC are Supplementary.

✦ Try This: In the given figure, AOC is a line. Find the value of x.

☛ Also Check: NCERT Solutions for Class 7 Maths Chapter 5

NCERT Exemplar Class 7 Maths Chapter 5 Problem 25

In Fig. 5.21, ∠AOC and ∠BOC form a pair of: a. vertically opposite angles, b. complementary angles, c. alternate interior angles, d. supplementary angles

Summary:

∠AOC and ∠BOC form a pair of supplementary angles

☛ Related Questions:

• In Fig. 5.22, the value of a is: a. 20°, b. 15°, c. 5°, d.10°
• In Fig. 5.23, if QP || SR, the value of a is: a. 40°, b. 30°, c. 90°, d. 80°
• In which of the following figures, a and b are forming a pair of adjacent angles