- In
Euclidean geometry, an
orthodiagonal quadrilateral is a
quadrilateral in
which the
diagonals cross at
right angles. In
other words, it is a four-sided...
-
length a
parallelogram in
which the
diagonals are
perpendicular (an
orthodiagonal parallelogram) a
quadrilateral with four
sides of
equal length (by definition)...
- an
orthodiagonal quadrilateral. The
result is: p.222 K = 1 2 ( a c + b d ) . {\displaystyle K={\tfrac {1}{2}}(ac+bd).} In a
cyclic orthodiagonal quadrilateral...
- be
called a dart,
particularly if it is not convex.
Every kite is an
orthodiagonal quadrilateral (its
diagonals are at
right angles) and, when convex,...
- geometry, Brahmagupta's
theorem states that if a
cyclic quadrilateral is
orthodiagonal (that is, has
perpendicular diagonals), then the
perpendicular to a...
- are equal.
Bicentric quadrilateral: it is both
tangential and cyclic.
Orthodiagonal quadrilateral: the
diagonals cross at
right angles.
Equidiagonal quadrilateral:...
-
quadrilaterals and
orthodiagonal quadrilaterals: a
quadrilateral is
equidiagonal if and only if its
Varignon parallelogram is
orthodiagonal (a rhombus), and...
-
perpendicular to a side
through the
midpoint of the
opposite side. An
orthodiagonal quadrilateral is a
quadrilateral whose diagonals are perpendicular....
- (geometry)
Spieker circle Van
Lamoen circle Eight-point
circle of an
orthodiagonal quadrilateral Director circle Directrix circle Villarceau circles...
- "anticenter". Brahmagupta's
theorem states that if a
cyclic quadrilateral is
orthodiagonal (that is, has
perpendicular diagonals), then the
perpendicular to a...
