Why not see how much you know about this topic already? Then work through the page and see if you can beat your score. Parallel lines are the same distance apart from each other all the way along ...

1. two sheets with drawings for patterns and drawings of the assembled model. One sheet is marked: SUPPLEMENTARY TRIHEDRAL ANGLES (/) STRIA (1)*. The second sheet is marked: SUPPLEMENTARY TRIHEDRAL ...

Horizontal lines run left to right, parallel to the horizon, with slope 0 and equation y = k. Vertical lines run top to bottom, perpendicular to the horizon, with undefined slope and equation x = k.

Whether you are sketching graphs in mathematics, understanding directions in geography, or reading blueprints in design class, horizontal and vertical lines are concepts you cannot avoid. They form ...