Constructions

What step is missing in these steps of Copy a Line Segment?

• Without changing the compasses' width, place the compasses' point on the the point R on the line you drew in step 1

• Without changing the compasses' width, Draw an arc roughly where the other endpoint will be.

• There are no more steps

What is the missing step in constructing a perpendicular bisector of a line segment?

• Without changing the compasses' width, draw an arc only above the line.

• Without changing the compasses' width, draw an arc above and below the line.

• Without changing the compasses' width, draw an arc only below the line.

Which construction is shown?

• perpendicular bisector of a line segment

• perpendicular to an external point

• segment bisector

Which construction is shown?

• perpendicular bisector of a line segment

• perpendicular to a line at a point on a line

• perpendicular to a line from an external point

Whats the next step in perpendicular to a line at a point on a line?

• Using the straight edge, draw a line from K to where the arcs cross.

• Connect the dots

• There are no more steps

• From P, mark off a short arc above K

What step is missing in these steps for a perpendicular to a line from an external point?

• Draw an arc across the line on each side of R, making sure not to adjust the compasses' width in between. Label these points P and Q

• Place the compasses on the given external point R.

• Place a straightedge between R and the point where the arcs intersect. Draw the perpendicular line from R to the line, or beyond if you wish.

Which construction is shown here?

• A parallel to a line through a point (angle copy method)

• A parallel to a line through a point (rhombus method)

• A parallel to a line through a point (translated triangle method)

• Copy an angle

What is the next step in constructing a parallel to a line through a point (angle copy method)?

• Set the compasses' width to the distance where the lower arc crosses the two lines

• Move the compasses to where the upper arc crosses the transverse line and draw an arc across the upper arc, forming point S

• There are no more steps

What step is missing in the steps for copying an angle?

• Draw an arc across both sides of the angle, creating the points J and K.

• Step 4

• Draw a ray PR from P through L and onwards a little further.

• Make a point P that will be the vertex of the new angle.

Which construction is shown here?

• a square

• a square given one side

• a square inscribed in a circle

• a rectangle