Concave Concave function Concave polygon Convex and Concave Concave cake Log-concave Logarithmically concave function Logarithmically concave measure Concave-eared torrent frog Logarithmically concave sequence Curved mirror Schur-convex function MV Mironave Quasiconvex function Rhododendron davidsonianum Lens Convex function Convex set Proper convex function Hollow Earth Sinum concavum Meniscus (liquid) Hexahedron Fractional programming Prékopa–Leindler inequality Ceiling Concavification Li Xiuqin Boulenophrys parva Inflection point Björk–Shiley valve Schreger line Chatter mark Fillet (mechanics) Histamenon Ovolo Equilateral pentagon Wing of ilium Horizontal p…

plate of palatine bone Canon FD 35mm f/2 Rectilinear polygon Fan triangulation Minimax theorem Trochlear notch Spokeshave Center of curvature Equilateral polygon Saddle joint Ogee Convex optimization Cabriolet (furniture) Conasprella imitator Neithea Neuromechanics of idiopathic scoliosis Xenophora peroniana Bathyfautor multispinosus Protocycloceratidae Amphiscapha Curve orientation Knefastia waltonia Pomaderris subplicata Ulna Rotating furnace Valdiviathyris quenstedti Turnoceras Elko point Infratemporal crest Streptoceras Paracomitas protransenna Scaphium (vessel) Stationary point Conus stimpsoni

Peurawot Oxbow complex Huigobio exilicauda Calliotropis calcarata Drillia concolor Doulingoceras Aphelaeceras Propebela rathbuni Heppia conchiloba Ivondrovia grangeri Ivondrovia seyrigi Abyssochrysos bicinctus World Ninepin Bowling Association Plainview point Quinnia sykesi Lafitte (automobile) Orthothecida Funa jeffreysii Sliprännor i Gantofta Epidendrum mancum Daphnella stiphra Geophilus admarinus Beekmanoceras Elongated gyrobifastigium Pseudophilautus stellatus Stomatella duplicata Simardoceras Gregorian telescope Paracomitas augusta Last Chance (Mars) Third metacarpal bone Neobirsteiniamysis The Men and the Mirror Pleurotomell