diff --git a/include/practice_1.h b/include/triangle.h
similarity index 100%
rename from include/practice_1.h
rename to include/triangle.h
diff --git a/src/practice_1.cpp b/src/triaangle.cpp
similarity index 99%
rename from src/practice_1.cpp
rename to src/triaangle.cpp
index ef297eb..66c5e82 100644
--- a/src/practice_1.cpp
+++ b/src/triaangle.cpp
@@ -1,4 +1,4 @@
-#include "practice_1.h"
+#include "triangle.h"
 #include "iostream"
 
 namespace PRACTICE {