diff --git a/EInAPI.h b/EInAPI.h
index 1371172..ad01640 100644
--- a/EInAPI.h
+++ b/EInAPI.h
@@ -574,6 +574,9 @@ EIN_EXPORT BOOL __stdcall EgtCurveParamAtLength( int nId, double dLen, double* p
 EIN_EXPORT BOOL __stdcall EgtCurveLengthAtPoint( int nId, const double ptOn[3], double dExtend, double* pdLen) ;
 EIN_EXPORT BOOL __stdcall EgtCurveIsClosed( int nId) ;
 EIN_EXPORT BOOL __stdcall EgtCurveIsFlat( int nId, BOOL bUseExtrusion, double dToler, double vtN[3], double* pdDist) ;
+EIN_EXPORT BOOL __stdcall EgtCurveIsACircle( int nId, double dToler, double ptC[3], double vtN[3], double* pdRad, BOOL* pbCCW) ;
+EIN_EXPORT BOOL __stdcall EgtCurveIsARectangle( int nId, double dToler, double ptP[3], double vtL1[3], double vtL2[3]) ;
+EIN_EXPORT BOOL __stdcall EgtCurveIsATrapezoid( int nId, double dToler, double ptP[3], double vtB1[3], double vtL1[3], double vtB2[3]) ;
 EIN_EXPORT BOOL __stdcall EgtCurveAreaXY( int nId, double* pdArea) ;
 EIN_EXPORT BOOL __stdcall EgtCurveArea( int nId, double vtN[3], double* pdDist, double* pdArea) ;
 EIN_EXPORT BOOL __stdcall EgtCurveNearestExtremityToPoint( int nId, const double ptP[3], BOOL* pbStart) ;