quadrangular, tri, rectangular, quadrilateral, equilateral, equilateral triangle, hexagonal, pentagonal, chamfered, oblong, shaped, isosceles triangle, curved, interlocking, oval, ovoid, isosceles, cuboid, baluster, elongated, invitational, semicircular, ovate, ribbonlike, conic, reeded, octagonal, gabled, tubelike, sawtooth, octahedral, ogee, rhomboid, scalloped, gambrel roof, trapezoidal, dual, cantilevered, arcuate, leaflike, wavelike, corbel, flower petal, curvilinear, squarish, concave, striated, round robin, cruciform, jointless, conical, symmetrical, convex, cylindrical, boxlike, horseshoe, pentangular, tentlike, beveled, fingerlike, lathed, roundish, winglike, ridged, undulating, flowerlike, semitransparent, foliate, lobed, horizontal, ashlar, rectilinear, crosshatch, quilled, steepled, interdivisional, latticed, quadripartite, crenellated, synclinal, king protea, gable roof, crenelated, concentric, pontil, membranous, geometrical, ringlike, sectional, seamed, ellipsoidal, fluted, unbranched, sloping, mirrorlike, anticlockwise, triangular prism, burled, syrtis major, ovular, sepal, arbor vitae, obtuse, entire, truncate, slit, prong, transverse, trapezoid, dorsal, fin, lobes, triangle, concavity, lobe, prongs, sclerite, aperture, apertures, rhomboidal, crescentic, quadrate, rhombic, diamondshaped, elliptical, polygonal, wedgeshaped

., allium triquetrum, althea officinalis, area of cardiac dullness, arrowleaf groundsel, balalaika, beech, beechnut, beech fern, beech tree, bermudan rig, bermuda rig, bermudian rig, big bend, bitter pea, buckwheat, callirhoe triangulata, capsella bursa-pastoris, chip, church key, closed-chain, closed-ring, clustered poppy mallow, common flat pea, compass saw, corbel, coronoid process, cowl muscle, crosse, cuneate, cuneus, cusp, daviesia, delta, deltoid, deltoid muscle, fagopyrum esculentum, fichu, fore-and-aft topsail, gable, gabled, gable end, gable wall, gaff topsail, genus daviesia, gore, great pyramid, harp, headpin, jib, kingpin, king post, kneecap, kneepan, lateen, lateen-rigged, lateen sail, leaflet, lesser twayblade, listera cordata, maltese cross, marconi rig, marsh mallow, musculus deltoideus, musculus trapezius, native holly, northern red oak, optical prism, patella, pediment, pie chart, planchette, playlobium obtusangulum, polygonum fagopyrum, prism, processus coronoideus, pterygium, pyramid, queen of the night, quercus borealis, quercus rubra, regular tetrahedron, scapula, scarf bandage, selenicereus grandiflorus, senecio triangularis, sharpie, shepherd's pouch, shepherd's purse, shoulder blade, shoulder bone, sling, spandrel, spandril, spider crab, spinnaker, squid, three-cornered leek, trapezius, trapezius muscle, triangle, triangular bandage, triangulate, trigon, triquetrous leek, truss, wedge, wedge-shaped, wedge shape, white mallow, windsor knot

angular, angulate, many-sided, multilateral, three-party, three-sided, three-way, trilateral, tripartite