Which of the following angles can be drawn using a broken protractor with markings from 0∘ to 45∘.
80∘
60∘
30∘
20∘
20∘ and 30∘ can be directly drawn using the given protractor.
To draw 80∘
Step1: Draw 45∘ with the broken protractor.
Step2: Draw 35∘ angle with the ray making 45∘ coinciding with the zero of the protractor.
The complete angle 45∘+35∘=80∘ has been drawn.
Similarly, 60∘ can also be drawn.