transversal

oblique

Angled, not straightforward

• slantedAngled from vertical
• angledTurned from perpendicular
• crosswiseAt right angles

bias · inclined · athwart · catercorner · skew · slantwise · crosscut · angular · kitty-corner

parallel

Equidistant at all points

• perpendicularAt right angles
• bisectDivide into two equal portions
• angleGeometric measure of rotation

line · plane · vector · axis · theorem · congruent · alternate · corresponding · interior · exterior

crossing

Point where paths intersect

• meetCome into contact
• convergeMeet at a point
• junctionPoint where things meet

node · point · crisscross · overlap · confluence · cut · span · bridge · connect · link

slice

Portion cut off

• profileSide-facing outline
• sectionDistinct divided part
• segmentDistinct part of whole

plane · layer · stratum · tier · cutaway · lateral · horizontal · vertical · longitudinal · sagittal

• linesstraight line, line, dotted line, dashed line, solid line
• perspectivelinear perspective, one-point perspective, three-point perspective, vanishing point, horizon line
• hypergraphsvertex, vertices, degree, connectivity
• Latin squaresstandard form, completion, conjugate, species
• espacioplaneta, luna, sol, tierra, cosmos
• geometryangles, circles, angle, shapes, lines