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Assume that AB¯¯¯¯¯¯¯¯

has already been constructed. What is the first step to construct the perpendicular bisector of AB¯¯¯¯¯¯¯¯
?(1 point)
Responses

Open the compass to a quarter of the length of AB¯¯¯¯¯¯¯¯
and draw a long arc through point A.
Open the compass to a quarter of the length of line segment cap A cap b and draw a long arc through point A.

Put the compass on point A and draw a long arc. Be sure the opening is less than half the length of AB¯¯¯¯¯¯¯¯
.
Put the compass on point A and draw a long arc. Be sure the opening is less than half the length of line segment cap A cap b .

Open the compass to half of the length of AB¯¯¯¯¯¯¯¯
and draw a long arc through point A.
Open the compass to half of the length of line segment cap A cap b and draw a long arc through point A.

Put the compass point on point A and draw a long arc. Be sure the opening is greater than half of the length of AB¯¯¯¯¯¯¯¯
.
​
Put the compass point on point A and draw a long arc. Be sure the opening is greater than half of the length of line segment cap A cap b . ​

Open the compass to a quarter of the length of AB¯¯¯¯¯¯¯¯ and draw a long arc through point A.

how will you determine that the compass has the proper radius set? How do you know what distance is 1/4 of AB?

To determine that the compass has the proper radius set, you will need to measure and mark off 1/4 of the length of AB¯¯¯¯¯¯¯¯ using a ruler or other measuring device. Once you have determined this length, you can set the compass to the same distance by adjusting the compass legs to match the measurement.

most constructions are done using just a straightedge, not a marked ruler...

I apologize for the confusion. In construction without a marked ruler, the first step to construct the perpendicular bisector of AB¯¯¯¯¯¯¯¯ would be to use the straightedge to draw a line that intersects AB¯¯¯¯¯¯¯¯ at point A. This line can be drawn in any direction, as long as it passes through point A.