diff --git a/src/types/index.d.ts b/src/types/index.d.ts
index 32831adc88c..968c44750a1 100644
--- a/src/types/index.d.ts
+++ b/src/types/index.d.ts
@@ -1880,6 +1880,12 @@ export interface ArcBorderRadius {
 export type ArcSpacingMode = 'proportional' | 'angular' | 'parallel';
 
 export interface ArcOptions extends CommonElementOptions {
+  /**
+   * Arc angle to cover. - for polar only
+   * @default circumference / (arc count)
+   */
+  angle?: number;
+
   /**
    * If true, Arc can take up 100% of a circular graph without any visual split or cut. This option doesn't support borderRadius and borderJoinStyle miter
    * @default true