Exercises: Constructing and Bisecting Line Segments and Angles

Measuring $60\degree$ directly with a protractor and marking the ray

Drawing the angle by eye, then labeling it $60\degree$

Drawing arcs with a pair of compasses using the equilateral-arc method

Draw a fresh line first, then guess a matching length by eye

Set the compass point on $A$ and the pencil on $B$, to capture the length

Measure $AB$ with a ruler first, then set the compass to that ruler reading

It only finds the midpoint of $AB$; the right angle needs a separate construction

It cuts $AB$ at its midpoint AND meets $AB$ at $90\degree$ — both from the same construction

It only produces a right angle at one end of $AB$, not the midpoint

From vertex $O$, cutting both arms of the angle

From the two points where the angle's arms end, at their far tips

From the midpoint of the angle's two arms, one arc for each