 Using just this information, no protractor, no scale, you only have a compass with you. Can you draw an angular bisector of this angle? In short, can you bisect this angle using only a compass and a pencil? Compass, and you said you have to use the same radius to mark both these, correct? You said the same radius. And then what that gives you is a equidistant point on this. And then again, you take a radius. This can be anything else, correct? The radius can have any other value. And then you mark off one arc like this and one arc like this. That gives you a second point. And then you join. It's a kite. It's called a kite. And kites have the property that the diagonals of the kites are angular bisectors. And so can you draw a line that trisects a given angle? Trisect is a word that extends bisect. It means to cut an angle into three parts.