From b3bdf5967bcfe0617cf5cf5d99edeb43457ff4db Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Thu, 28 Oct 2021 17:03:11 +0200
Subject: [PATCH] Sketcher: [skip ci] handle coincident points when trying to
 create arc/circle

---
 src/Mod/Sketcher/Gui/CommandCreateGeo.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/Mod/Sketcher/Gui/CommandCreateGeo.cpp b/src/Mod/Sketcher/Gui/CommandCreateGeo.cpp
index 8e43658060..f7d00610ee 100644
--- a/src/Mod/Sketcher/Gui/CommandCreateGeo.cpp
+++ b/src/Mod/Sketcher/Gui/CommandCreateGeo.cpp
@@ -107,6 +107,9 @@ Base::Vector2d GetCircleCenter (const Base::Vector2d &p1, const Base::Vector2d &
     double vv =  v*v;
     double ww =  w*w;
 
+    if (uu * vv * ww == 0)
+        THROWM(Base::ValueError,"Two points are coincident");
+
     double uv = -(u*v);
     double vw = -(v*w);
     double uw = -(u*w);