Right angle

orthotomous vertical tetraxile spur confidante lead cross peen hammer crome square roundarm isometric orthotomy cross grid plan universal instrument try square spirocyclononane straight angle complement fromward skew arch warrington hammer orthogon orthometric right angled obtuse angle loxodrome spherical excess gradian quarterpace oblique angle rectangle steel square right triangle adze involute paternoster orthotomic upright portative organ penrose triangle acute angle miter joint round angle quartersaw reflex angle transept cat's paw golygon corncutter profile carpenter's square wheatstone's rod t square quartering epaulement cramp iron angle expanded metal cross section rectangular hyperbola cancellate bevel gear kathetal set square orthorhombic complementary angles polystick spirocyclopentane t bandage spirocyclohexane straight line quarter belt excess fantail orthoptic orthotetrahedron perpendicular spirocyclobutane squarely groma spirocycloheptane orthodiagonal sideline equatorial spirocyclooctane orthoclastic spirocyclopropane birectangular squarrose stabstitch orthogonal trirectangular right angles degree right trapezoid gon crossed loop sensor fresnel's rhomb abeam steinmetz solid quadrature shelf corner