oxygon
acute-angled
acute triangle
acute-angled triangle
scalene triangle
obtuse-angled triangle
obtuse triangle
oblique triangle
equilateral triangle
trigon
scalene
Gougu
trigonal
right-angled triangle
right triangle
isosceles triangle
triangled
truss
subtriangle
tri
obtuse-angled
trianglewise
Lemoine point
triangulate
deltoideus
triangular
dreibein
Steiner point
trianguloid
equitriangular
nonhypotenuse
orthogon
threeside
Morley's trisector theorem
triagonal
orthogonium
triangularly
hypotenuse
orthocenter
three-cornered
quadriserially
incircle
triforce
Malfatti circle
cyclic quadrilateral
subtriangular
Morley triangle
incenter
delta
trifan