API Reference > geometry-core > CartesianGeometry > Ellipsoid > sectionArcWithIntermediateNormal sectionArcWithIntermediateNormal Method create a section arc with and end at positions A and B, and in plane with the normal at a fractional interpolation between. sectionArcWithIntermediateNormal(angleA: LongitudeLatitudeNumber, intermediateNormalFraction: number, angleB: LongitudeLatitudeNumber): Arc3d Parameter Type Description angleA LongitudeLatitudeNumber start point of arc (given as angles on this ellipsoid) intermediateNormalFraction number angleB LongitudeLatitudeNumber end point of arc (given as angles on this ellipsoid) Returns - Arc3d Defined in geometry3d/Ellipsoid.ts Line 530 Last Updated: 12 June, 2024