**Introduction**:

Two **Angles** are **complementary angle** when they add up to 90 degrees means a **right angles**.one condition is there they don’t have next to each other.Sum of complementary angle is 90 degree.

**Example:**

75° and 15° are complementary angles.

20° and 70° are complementary angles.

**Questions:**

1.Which are the complementary angles given below:

a)30 and 40 degree b)30 and 60 degree

c)120 and 60 degree d)30 and 70 degree

2)what is called complementary angles?

3)is they are next to each other?

4) In complementary angles sum of two angles is ________________.

5) if the two angles are complementary then what is the value of X?