equilateral triangle, ellipse, hypotenuse, equilateral, rhombus, tetrahedron, conic, isosceles, celestial sphere, rectangle, ellipsoid, asterism, elliptic, rhombic, cuboid, dodecahedron, polyhedron, parabola, ovoid, zodiacal light, semicircles, concavity, parallelogram, bilaterally symmetrical, hexagon, symmetrical, syrtis major, triangular prism, arcuate, pentagonal, oblong, rhomboid, philtrum, hyperbolic geometry, octagons, asymptote, caudal fin, gnomon, celestial equator, fingerlike, topologically, synclinal, spheroidal, umbels, elongated, octahedron, crosshatch, whorls, cumulus cloud, icosahedron, nebulosity, curved, arcsecond, ovate, concentrically, sigmoidal, unpolarized, ribbonlike, plumb bob, ecliptic, horsehead nebula, ovular, sepals, infinities, leaflike, whorled, winglike, calyx, allee, elliptical, conical, diagonals, mirrorlike, spherical, icosahedral, circularly, moonlet, metamorphic rock, horizontal, convex lens, spathe, frustum, stalactite, fanlike, crenellations, rectangular, featherlike, cubistic, weblike, gaussian, antiparallel, tubelike, superposed, stippled, hysteresis loop, radians, inverted, striated, curvatures, catkin, lateral epicondyle, angularly

triangle, trigon, trilateral