diff --git a/exercises/practice/triangle/.meta/tests.toml b/exercises/practice/triangle/.meta/tests.toml
index 6a2c557a..0ceda989 100644
--- a/exercises/practice/triangle/.meta/tests.toml
+++ b/exercises/practice/triangle/.meta/tests.toml
@@ -33,6 +33,9 @@ description = "isosceles triangle -> first two sides are equal"
 [d2080b79-4523-4c3f-9d42-2da6e81ab30f]
 description = "isosceles triangle -> first and last sides are equal"
 
+[eca8ae18-e191-4795-836f-c6457e649d80]
+description = "isosceles triangle -> two smaller sides are equal"
+
 [8d71e185-2bd7-4841-b7e1-71689a5491d8]
 description = "isosceles triangle -> equilateral triangles are also isosceles"
 include = false
diff --git a/exercises/practice/triangle/triangle_test.cpp b/exercises/practice/triangle/triangle_test.cpp
index aeda0bdd..766384b2 100644
--- a/exercises/practice/triangle/triangle_test.cpp
+++ b/exercises/practice/triangle/triangle_test.cpp
@@ -71,6 +71,11 @@ TEST_CASE("isosceles triangle -> first and last sides are equal",
     REQUIRE(triangle::flavor::isosceles == triangle::kind(4, 3, 4));
 }
 
+TEST_CASE("isosceles triangle -> two smaller sides are equal",
+          "[eca8ae18 - e191 - 4795 - 836f - c6457e649d80]") {
+    REQUIRE(triangle::flavor::isosceles == triangle::kind(3, 4, 3));
+}
+
 TEST_CASE("isosceles triangle -> no sides are equal",
           "[840ed5f8-366f-43c5-ac69-8f05e6f10bbb]") {
     REQUIRE_FALSE(triangle::flavor::isosceles == triangle::kind(2, 3, 4));