diff --git a/__test__/Geometry/__snapshots__/EdgeGeometry.test.ts.snap b/__test__/Geometry/__snapshots__/EdgeGeometry.test.ts.snap
index ac928ce0f..5718b882a 100644
--- a/__test__/Geometry/__snapshots__/EdgeGeometry.test.ts.snap
+++ b/__test__/Geometry/__snapshots__/EdgeGeometry.test.ts.snap
@@ -1,6 +1,6 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`EdgeGeometry生成 1`] = `236`;
+exports[`EdgeGeometry生成 1`] = `148`;
 
 exports[`EdgeGeometry生成 2`] = `410`;
 
diff --git a/src/DatabaseServices/Shape2.ts b/src/DatabaseServices/Shape2.ts
index 0090cf478..f983940a4 100644
--- a/src/DatabaseServices/Shape2.ts
+++ b/src/DatabaseServices/Shape2.ts
@@ -32,7 +32,7 @@ export class Shape2 extends Shape
                     let splitCount = tempArc.Radius / ARC_SplitLength;
                     splitCount = clamp(Math.floor(splitCount * 0.5) * 2, Arc_MinSplitCount, ARC_MaxSplitCount);
 
-                    resolution = Math.max(2, Math.abs(Math.ceil((tempArc.AllAngle * 0.5) / Math.PI)) * splitCount);
+                    resolution = Math.max(2, Math.ceil(Math.abs((tempArc.AllAngle * 0.5) / Math.PI) * splitCount * 0.5)) * 2;
                 }
                 else
                     resolution = divisions * 2;