**Basic Geometrical Ideas**

**Exercise – 4.3**

## Ex 4.3 Question 1.

**Name the angles in the given figure.**

**Solution:**

There are four angles = ∠DAB, ∠ABC, ∠BCD, and ∠CDA

## Ex 4.3 Question 2.

**In the given diagram, name the points(s)**

**(a) In the interior of ∠DOE**

**(b) In the exterior of ∠EOF**

**(c) On ∠EOF**

**Solution:**

**(a) **The point in the interior of ∠DOE = A.

(b) The point in the exterior of ∠EOF = C, A, and D.

(c) The points on ∠EOF = E, B, O, and F.

## Ex 4.3 Question 3.

**Draw rough diagrams of two angles such that they have**

**(a) One point in common**

**(b) Two points in common**

**(c) Three points in common**

**(d) Four points in common**

**(e) One ray in common**

**Solution:**