plane angle Definition

angle, interior angle, exterior angle, solid angle, complementary angle, spherical angle, angle of incidence, angle of refraction, central angle, supplementary angle, decussative, angulometer, reclination, subtense, angle of reflection, clinometric, amblygon, biangular, multangular, clinodiagonal, polar equation, heptangular, bisectrix, oblique angle, round angle, orthocentre, brachypinacoid, right triangle, sexangled, declinator, geniculation, sexangular, macropinacoid, obtuse triangle, critical angle, octangle, incentre, angulous, orthodiagonal, orthopinacoid, magnetic dip, coigne, subtangent, agonic, septangle, brachydiagonal, centre of curvature, set square, hendecagon, angular distance, radius of curvature, acute triangle, spheroconic, demicircle, tangent plane, clinopinacoid, anglemeter, minor axis, total internal reflection, conic section, major axis, hypothenuse, semimajor axis, pantometer, optigraph, minute of arc, monaxial, coordinate axis, undecagon, miter joint, perpendicular, lissajous figure, cofunction, tacnode, pinacoid, spherometer, brachydome, bitangent, latus rectum, schmidt telescope, binode, circumferentor, semiaxis, angular, circumnutate, grivation, vertilinear, loxodrome, curvature, hexangular, antiparallelogram, incurvate, cosmolabe, ellipsoid of revolution, semiparabola, slopingly, sectant, regular polygon, loxodromic, semilens,