diff --git a/src/Mod/Sketcher/App/SketchObject.cpp b/src/Mod/Sketcher/App/SketchObject.cpp
index 34b929bde4..7159c05356 100644
--- a/src/Mod/Sketcher/App/SketchObject.cpp
+++ b/src/Mod/Sketcher/App/SketchObject.cpp
@@ -2615,6 +2615,7 @@ int SketchObject::addSymmetric(const std::vector<int> &geoIdList, int refGeoId,
                         (*it)->Type ==  Sketcher::Distance ||
                         (*it)->Type ==  Sketcher::Equal ||
                         (*it)->Type ==  Sketcher::Radius ||
+                        (*it)->Type ==  Sketcher::Angle ||
                         (*it)->Type ==  Sketcher::PointOnObject ){
                             Constraint *constNew = (*it)->copy();
 
@@ -2635,6 +2636,10 @@ int SketchObject::addSymmetric(const std::vector<int> &geoIdList, int refGeoId,
 
                             if (constNew->Type == Tangent || constNew->Type == Perpendicular)
                                 AutoLockTangencyAndPerpty(constNew,true);
+                            
+                            if( ((*it)->Type ==  Sketcher::Angle) && (refPosId == Sketcher::none)) {
+                                constNew->setValue(-(*it)->getValue());
+                            }
 
                             newconstrVals.push_back(constNew);
                         }