-
almagesti Ptolemei. In 1464, he
completed De
triangulis omnimodis ("On
Triangles of All Kinds"). De
triangulis omnimodis was one of the
first textbooks presenting...
- and
Gamma Trianguli, of
apparent magnitudes 3.00 and 4.00, respectively, form the base of the
triangle and the yellow-white
Alpha Trianguli, of magnitude...
-
charted and gave the
brighter stars their Bayer designations in 1756.
Alpha Trianguli Australis,
known as Atria, is a second-magnitude
orange giant and the...
- Alpha
Trianguli (α
Trianguli,
abbreviated Alpha Tri, α Tri) is a
spectroscopic binary star in the
constellation of Triangulum.
Based on
parallax measurements...
- Beta
Trianguli (Beta Tri, β
Trianguli, β Tri) is the
Bayer designation for a
binary star
system in the
constellation Triangulum,
located about 127 light...
-
Delta Trianguli,
Latinized from Delta Tri, is a
spectroscopic binary star
system approximately 35 light-years (11 pc) away in the
constellation of Triangulum...
- (the
Liber philotegni Iordani de Nemore) and a
longer version (Liber de
triangulis Iordani)
which divides the text into books, re-arranges and
expands book...
- A
triangular number or
triangle number counts objects arranged in an
equilateral triangle.
Triangular numbers are a type of
figurate number,
other examples...
- by the fifth-magnitude
stars ι
Trianguli (6 Tri), 10
Trianguli, and 12
Trianguli. Also
known as TZ
Trianguli, 6
Trianguli is a
multiple star
system with...
-
Alpha Trianguli Australis (Latinised from α
Trianguli Australis,
abbreviated Alpha TrA, α TrA),
officially named Atria /ˈeɪtriə/, is the
brightest star...
