Two straight lines that are equidistance from each other.
Parallel lines are 2 long straight lines that don't touch each other
I believe you said there'd be 12 in each row.
draw 9 lines and join them
You don't
Plant the in the shape of an arrowhead with intersecting lines from the middle bottom point. Plant the trees at every corner!!
Draw a large X. Extend the feet so its base is wider than its top. Plant four trees at the ends of the X lines and one where the two lines cross. Draw two lines from the two bottom trees up to the two outer top trees and continue the lines till they meet. Plant a tree there. Four rows of trees, with three trees in each row. QED.
10 trees. Draw a five-pointed star. Plant a tree at each of the points and five more where the lines intersect.xx x x xx xxx x
Plant them in a star, with four trees in each line.
Plant them in the shape of a star. The way the five lines (rows) overlap, you only need 10 total.
Perpendicular lines.
intersecting lines...
Two straight lines that are equidistance from each other.
Parallel lines are 2 long straight lines that don't touch each other
Draw a five-pointed star. Plant a tree at each of the points and five more where the lines intersect.xx x x xx xxx x
Yes. You can draw infinitely many straight lines from each point.
I believe you said there'd be 12 in each row.