acute-angled
oxygon
acute triangle
trigonal
Morley's trisector theorem
triangular
scalene
scalene triangle
acute-angled triangle
threeside
trigonic
equilateral triangle
obtuse-angled
trianguloid
Lemoine point
trianglewise
triforce
triagonal
base angle
Morley triangle
obtuse-angled triangle
obtuse triangle
triangulate
oblique triangle
triangled
equitriangular
deltoideus
incenter
triquetrously
dreibein
rhombohedral
triquetrous
bicone
right triangle
three-cornered
triakisoctahedron
truss
nonhypotenuse
Malfatti circle
trirectangular
trigon
isosceles triangle
oblique-angled
acute
triarchic
subtriangular
triangle
semiconcentric
right-angled triangle
triangularly