perpendicular
/ˌpɝpənˈdɪkjəɫɝ/
at right angles to a line or surface
perpendicular in a sentence
“The walls are perpendicular to the floor.”
Origin of perpendicular
Latin perpendicularis, from perpendiculum plumb line
Related Words
dimension
the number of independent coordinates needed to specify a point
tessellation
a pattern of shapes that fit together without gaps or overlaps
euclidean
relating to ordinary flat geometry based on Euclid's axioms
topology
the study of properties preserved under continuous deformation
manifold
a space that locally resembles Euclidean space
isomorphism
a structure-preserving mapping between two mathematical objects