Draw the angle 45 ∘ using the protractor.

We need to draw angle 45 ° . First, draw a base ray A S → as shown below Place the centre of the protractor at the vertex A . Line up the ray A S → with the 0 ° line. Then draw and label a point ( N ) at the 45 ° mark on the inner scale (anti-clock wise). Remove the protractor and draw A N to complete the angle. Now, ∠ N A S = ∠ S A N = ∠ A = 45 ° is the required angle.

Draw the angle 45 ∘ using the protractor.

We need to draw angle 45 ° . First, draw a base ray A S → as shown below Place the centre of the protractor at the vertex A . Line up the ray A S → with the 0 ° line. Then draw and label a point ( N ) at the 45 ° mark on the inner scale (anti-clock wise). Remove the protractor and draw A N to complete the angle. Now, ∠ N A S = ∠ S A N = ∠ A = 45 ° is the required angle.

Draw the angle 120 ∘ using the protractor.

We need to draw angle 120 ° First, draw a base ray M C → as shown below Place the centre of the protractor at the vertex M . Line up the ray M C → with the 0 ° line. Then draw and label a point ( S ) at the 120 ° mark on the inner scale (anti- clock wise), Remove the protractor and draw M S to complete the angle. Hence, ∠ M = ∠ S M C = ∠ C M S = 120 ° is the required angle.

Draw 65 ∘ angle using the protractor.

We need to draw 65 ° angle. Steps of construction: 1 . Draw a ray A B → as shown below, 2 . Place the centre of the protractor at the vertex A . Line up the ray A B → with the 0 ° line. Then draw and label a point C at the 65 ° mark on the inner scale (anti-clockwise). 3 . Removed the protractor and draw A C → to complete the angle. Hence, ∠ A = ∠ B A C = ∠ C A B = 65 ° is the required angle.

Draw angle 135 ∘ using the protractor.

We need to draw angle 135 ° Steps of Construction: Draw a ray E G → as shown below, Place the centre of the protractor at the Vertex E . Lined up the ray EG → with the 0 ° line. Then draw and label a point F at the 135 ° mark on the inner scale (anti-clockwise). Remove the protractor and draw E F → to complete the angle. Hence, ∠ E = ∠ F E G = ∠ G E F = 135 ° is the required angle.

Draw 0 ∘ angle using the protractor.

We need to draw 0 ° . Steps of construction: 1 . Draw a ray G H → as shown below, 2 . Placed the centre of the protractor at the vertex G . 3 . Lined up the ray GH → with the 0 ° line. 4 . Then draw and label a point I at 0 ° mark on the outer scale (clockwise). 5 . Remove the protractor and draw G I → to complete the angle. We can see that, G I → exactly lie on G H → . Hence, ∠ G = ∠ H G l = ∠ I G H = 0 ° is the required angle.

Draw 180 ∘ angle using the protractor.

We need to draw 180 ° angle. Steps of construction: 1 . Draw a line I J ↔ and mark a point O as shown below, 2 . Placed the centre of the protractor at the point O . 3 . Line up the ray I J ↔ with the 0 ° line. 4 . Then draw and label a point K at 180 ° mark on the inner scale (anti- clock wise) 5 . Remove the protractor. We can see that, O K → exactly lie on I J ↔ Now, ∠ O = ∠ I O K = ∠ K O I = 180 ° .

Draw 90 ∘ angle using the protractor.

We need to draw 90 ° angle. Steps of construction: 1 . Draw a ray I G → as shown below, 2 . Place the centre of the protractor at the vertex I . 3 . Line up the ray I G → with the 0 ° line. 4 . Then, draw and label a point ( B ) at the 90 ° mark on the inner scale (anticlockwise). 5 . Remove the protractor and draw I B → to complete the angle. Hence, ∠ I = ∠ B I G = ∠ G I B = 90 ° is the required angle.