If you didnt have a potractor, how could you reconstruct the quarter or it from 0 degrees to 90degrees

43.Without having a protractor, how can we construct the quarter or it from 0 degrees to 90 degrees. This question is very simple. There are a lot of ways of how constructing a right angle without using a protractor. One of the easiest way is creating a straight vertical line then connect another horizontal from from vertical’s end on the bottom to the right or left. By that you can have a right angle or 90 degrees.

Element 17 is chlorine it is a group 7 element(halogen) and belongs to period 3 of the periodic table