sextant, straight angle

diameter, curvature, width, thickness, widthwise, cubit, ellipse, radii, isosceles triangle, girth, centimeter, length, concavity, semicircles, tubelike, lengthwise, protrusion, lateral epicondyle, arcsecond, sepal, tetrahedron, hypotenuse, condyle, mediastinum, angstroms, ellipsoid, occiput, indention, maxillary, femoral, sigmoid colon, periosteum, dorsum, hexagon, hipbone, tortuosity, umbilicus, lunate, brachial artery, lobes, equilateral triangle, pencil eraser, pelvic girdle, prepuce, internodes, cuboid, roundness, tubercle, diaphysis, longways, radula, thighbones, size, lordosis, scutes, waists, millimeter, otoliths, micrometre, inseam, isosceles, ileocecal valve, newtonian telescope, supraclavicular, lengthways, acromion, pedicle, conic, micrometer, tarsus, acetabulum, forelimb, oblate, ulnar, whorls, rectangle, epiphyseal, labia minora, omentum, torus, glenoid, girdle, palps, acoustic impedance, anal fin, distensibility, epiphysis, sulci, navicular, cecum, tibial, plastron, archosaur, indentation, milky way galaxy, aortic arch, premolars, trochanter, sauropod dinosaur, contour, logarithmic scale, pannus, circumferences, perimeter, radius, angle, acreage, depth, number, scope, breadth, extent, height, margin, volume, diameters, lateral, range, total, equator, tangent, abscissa, mean, =, dimensionless, interval, nondimensional, angular, circumferential, maximum, space, zenith, calculate, extrapolated, forward

girth

around, circle, clock golf, diam, diameter, eratosthenes, fantastic, pi, quadrant, quarter-circle, radius, right angle

length, size

perimeter