二線は平行するとせよ。の英語

Let the two lines be parallel.

Suppose these two lines are parallel.

Parallel lines do not intersect each other.

Parallel lines don't intersect each other.

This line is parallel to that.

Two lines cross [meet] at right angles.

This line is parallel to the other.

parallels never meet

parallel lines never converge

The two lines meet at right angles.

Draw a line parallel to this.

The two lines cross each other at right angles.

bisect a line

Draw a line parallel to the line AB.

a straight line which comes in contact but does join with the circumference of two circles

draw parallels

The two lines cross each other at right angles.

horizontal lines that are parallel

These two lines are at right angles.

parallel

parallel lines

the point of intersection of two lines―the junction of two lines

Two lines are perpendicular to each other.

Draw a straight line between those two points.

Draw a parallel to this line.

Two lines meet at a point.

parallel lines

Parallel lines will never meet, even over cosmically large distances.

in a direction parallel with lines of longitude

in navigation, the angle of intersection