## Drawing Angles

#### 1. Draw an angle of 60°.

**Step 1:**

Draw a straight line. Call it AB. Mark a point on AB and call it O.

**Step 2:**

Place the protractor's base line over AB with its centre on O.

**Step 3:**

Reading the scale from left, mark Point C so that

**∠**AOC is 60°.

Join Point C to Point O and mark

**∠**AOC as 60°.

Alternatively, you can read the scale from right and mark Point D so that

**∠**BOD is 60°.

Join Point D to Point O and mark

**∠**BOD as 60°.

#### 2. Draw ∠RST equal to 135°.

**Step 1:**

Draw a straight line RS.

**Step 2:**

Place the protractor's base line over RS with its centre on S.

∠RST tells us that the vertex of the angle is Point S.

**Step 3:**

Read the scale from 0° at R and mark Point T so that ∠RST is 135°.

Join Point S to Point T and mark

**∠**RST as 135°.

Here are two more ways of drawing ∠RST equal to 135°.