straight angle Definition

angular unit, circumference, semidiameter, microradian, minute of arc, standard candle, diameter, unit of measurement, semimajor axis, shaftment, angular distance, major axis, coudee, heliometry, heliometer, solid angle, cubic centimetre, longimetry, metric linear unit, radius of curvature, linear unit, angulometer, exterior angle, fundamental quantity, radical axis, centre of curvature, pupillometer, metric system, perradial, spherometer, arshine, central angle, pantometer, radius, metric unit, spherograph, anglemeter, interior angle, conchometry, holometer, minor axis, spherical angle, demicircle, astronomy unit, gradian, plane figure, right triangle, polar equation, centimetre, backstaff, absolute magnitude, ellipsoid of revolution, apparent magnitude, measurement, line of force, cathetometer, light second, cephalometry, conic section, heptangular, ulnage, regular polygon, orthocentre, accent mark, centimeter, small circle, trioctile, mass unit, inch, thickness, cephalometer, incentre, ultramicrometer, subtangent, mean solar day, dendrometer, micrometry, length, lissajous figure, perforation gauge, temperature scale, radio interferometer, macrometer, supplementary angle, complementary angle, millimeter, angle of refraction, magnetic dip, decussative, ovaliform, amblygon, sexangular, polar coordinate, moment of inertia, tacnode, cathetus, square yard, pachymeter, epicycloidal wheel, round angle,