construct àñ àñglé øf 80°
Answers
Step-by-step explanation:
Only by using compass , 80° angle to be constructed…
As 90° - 10° = 80° , So, we try to construct 10° first
We need to know that any angle can be divided into any number of 2^n equal parts. Where n is a whole number like 1, 2, 3,4 ….. & so on.
Step wise , shown below are angles to be constructed in order..
Step1: 90° + 45° = 135°
Step2: 135° ÷ 2 = 67.5°
Step3: 67.5° ÷2 = 33.75°
Step4: 33.75° ÷2 = 16.875°
Step4: Now, we combine angles 33.75° & 16.875° together to get 50.625°
Step4: Now, from our initial 90° angle , the above constructed 50.625 ° is taken off. & We are left with 40° approximately or we can say very very close to 40°. ( as with 100% accuracy, it's not possible to construct the required measure only by using compass)
Step4: Now this 40° is divided into 2 equal parts. We get 20°, which is further divided into 2 equal parts . We get 10°
Step5: Now we construct a fresh 90° angle, out of which the above obtained 10° is cut off. ( by using the method of construction of equal angles)
Finally we get 90° - 10° = 80°
In the above method, we are neglecting the lowest decimal value… Whereas in other methods, we may have to neglect the bigger decimal value, which affects the accuracy more.
Answer:
❥Just follow these steps and you have your desired angle. Draw a straight line using ruler scale at a convenient distance. 2.Using compass draw a small semi circle (i. e. It would be of 18 0 degrees) 3.Cut that semi circle in 3 equal parts i. As each will be of 60 degree draw a arc between 1&2 arc.
Step-by-step explanation:
Hope it's helpful to you ✌️