threeside
trigonal
scalene triangle
scalene
equilateral triangle
triangular
three-cornered
subtriangular
triagonal
acute-angled
trilobular
triangulate
deltoid
trirectangular
trianguloid
triangled
orthocentric
nonhypotenuse
rhombohedral
isosceles triangle
triangularize
triakisoctahedron
triquetrously
isosceles trapezoid
truss
Lemoine point
triangularizable
trapezium
triangularly
trapezoid
triforce
trilateral
oxygon
trefoil
triquetral
quadrate
hawser-laid
isosceles
triformed
trigonic
triamond
plain-laid
Malfatti circle
three-sided
tri
trianglewise
trigon
Morley's trisector theorem
deltoideus
many-sided