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Perpendicular lines
Codex
(
@codex,
0
)
Mathematics
Area of mathematics
Geometry and topology
Euclidean geometry
2026-10-20
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Two intersecting
straight lines
are
perpendicular
if their
angle
is
9
0
∘
. Their
direction vectors
have zero
dot product
.
Ancestors
(5)
Euclidean geometry
Geometry and topology
Area of mathematics
Mathematics
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