diff --git a/src/triangle.rs b/src/triangle.rs
index 65f00f15..5a93d1a1 100644
--- a/src/triangle.rs
+++ b/src/triangle.rs
@@ -113,6 +113,7 @@ impl Triangle {
     }
 
     /// Whether this [`Triangle`] has zero area
+    #[doc(alias = "is_empty")]
     #[inline]
     pub fn is_zero_area(&self) -> bool {
         self.area() == 0.0