One in a Krillion +100SagittaLatin for arrow: the segment from an arc's midpoint to its chord.Deep Cut +85Acamar pointAjima-Malfatti pointAngle of a segmentAngle trisectorAnticenterAntiorthic axisAntipodeApertureApollonius pointApothemApsisArmBailey pointBare angle centerBevan pointBialtitudeBimedianBranchBrianchon pointBrocard angleBrocard axisBrocard midpointBrocard pointCevianChamferCircumcenterCircumradiusClawson pointCleaverCo-vertexCongruent incircles pointCongruent isoscelizers pointConjugate axisConjugate diameterCore of a star polygonCuspCylindrical segmentCylindrical wedgeDe Longchamps lineDe Longchamps pointDe Villiers pointDiagonal pointDihedral angleDroussent pivotEarEhrmann congruent squares pointEhrmann pointEigencenterElkies pointEppstein pointEqual parallelians pointEqual perimeters isoscelizer pointEquatorial radiusEqui-Brocard centerEquilateral cevian triangle pointEuler lineEvans pointExcenterExeter pointExmedianExmedian pointExradiusExsymmedianExternal angle bisectorFace angleFace diagonalFar-out pointFermat axisFermat pointFeuerbach antipodeFeuerbach pointFilletFletcher pointFocal chordFocal radiusFocus of the Kiepert parabolaFoot of the altitudeFuhrmann centerGenerating circleGeneratrixGergonne lineGergonne pointGibert pointGnomonGossard perspectorGriffiths pointHalf-angleHatzipolakis-Yiu pointHofstadter pointHofstadter trapezoid pointHyperbolic sectorIncenterInflection pointInner equatorInner radiusInradiusIsodynamic pointIsogonal mittenpunktIsoscelizerIsoscelizer pointJerabek antipodeJerabek centerJohnson midpointKenmotu pointKenmotu-van Lamoen pointKiepert antipodeKiepert centerKosnita pointLatus rectumLemoine axisLobeLonguet-Higgins pointLuneMajor axisMajor radiusMaltitudeMeridianMid-arc pointMidradiusMidsegmentMinor axisMinor radiusMiquel pointMittenpunktMonge pointMorley centerMouthNagel lineNagel pointNapoleon pointNappeNeuberg centerNewton lineNine-point centerNobbs pointNodeNonantOctantOrthic axisOrthocenterOuter equatorOuter radiusParabolic segmentParallelianParry pointPetalPoint of tangencyPolar radiusPolePolyhedral anglePower pointPrasolov pointRigby pointSchiffler pointSchoute centerSemi-axisSemi-latus rectumSemi-major axisSemi-minor axisSemiordinateSextantSharygin pointSimson lineSmall circleSoddy centerSoddy lineSolid angleSpace diagonalSpherical angleSpherical capSpherical sectorSpherical segmentSpherical wedgeSpherical zoneSpieker centerSpireSplitterSteiner curvature centroidSteiner pointSymmedianSymmedian pointTarry pointTaylor centerThird Brocard pointTixier pointTransverse axisTrisected perimeter pointTrisection pointUmbilicVan Aubel lineVan Lamoen circumcenters pointVecten pointVertex centroidVertex figureVillarceau circlesWabash centerWeill pointYff center of congruenceYff parabolic pointYff pointYff-Malfatti pointYiu angle pointRare +60Angle bisectorApexArchAxisBase angleBase edgeCentral angleCentroidEndpointExterior angleFocusGreat circleHemisphereInscribed angleInteriorLateral edgeLateral faceLegMedianMidpointPerpendicular bisectorPlane of symmetryQuadrantSectorSegmentSlant heightVertex angleSchooler +30AltitudeArcAxis of symmetryBaseCentreChordCircumferenceDiagonalExteriorFaceHypotenuseInterior anglePerimeterSemicircleSurfaceVertexPlankton +10AngleDiameterEdgeRadiusSide