diff --git a/Benchmarks/benchmark.cpp b/Benchmarks/benchmarks.cpp
similarity index 95%
rename from Benchmarks/benchmark.cpp
rename to Benchmarks/benchmarks.cpp
index b9ebc29..f1bcb76 100644
--- a/Benchmarks/benchmark.cpp
+++ b/Benchmarks/benchmarks.cpp
@@ -37,6 +37,7 @@ std::pair <double,double> norm2_operation(void);
 std::pair <double,double> norm_ext_operation(void);
 std::pair <double,double> norm2_ext_operation(void);
 std::pair <double,double> angle_operation(void);
+std::pair <double,double> angle_ext_operation(void);
 std::pair <double,double> make_unit_operation(void);
 std::pair <double,double> make_unit_ext_operation(void);
 
@@ -61,7 +62,8 @@ int main(void)
     print_report("v.norm2()  average time: ",norm2_operation());
     print_report("norm(v)    average time: ",norm_ext_operation());
     print_report("norm2(v)   average time: ",norm2_ext_operation());
-    print_report("angle(v,u) average time: ",angle_operation());
+    print_report("v.angle(u) average time: ",angle_operation());
+    print_report("angle(v,u) average time: ",angle_ext_operation());
     print_report("v.unit()   average time: ",make_unit_operation());
     print_report("unit(v)    average time: ",make_unit_ext_operation());
 
@@ -329,6 +331,19 @@ std::pair <double,double> norm2_ext_operation(void){
     return std::make_pair(average(times), standard_deviation(times));
 }
 std::pair <double,double> angle_operation(void){
+    std::array<double, samples> times;
+    vector3D v; v.load(1.5,1,0.2);
+    vector3D u; u.load(4.5,-1,-0.2);
+    for (auto &i : times){
+        auto start = std::chrono::steady_clock::now();
+        v.angle(u);
+        auto end = std::chrono::steady_clock::now();
+        std::chrono::duration<double> diff = end-start;
+        i=std::chrono::duration_cast<std::chrono::nanoseconds>(diff).count();
+    }
+    return std::make_pair(average(times), standard_deviation(times));
+}
+std::pair <double,double> angle_ext_operation(void){
     std::array<double, samples> times;
     vector3D v; v.load(1.5,1,0.2);
     vector3D u; u.load(4.5,-1,-0.2);
diff --git a/Makefile b/Makefile
index c0e31ef..fdaa819 100644
--- a/Makefile
+++ b/Makefile
@@ -10,14 +10,21 @@
 # * along with this program. If not, see <https://github.com/cdelv/Vector3D> LICENSE.
 # */
 
-all: test
-
 test: test1.x
 
 test1.x: Tests/Test1.cpp
 	@g++ $^ -o $@ -lgtest -pthread
 	@./$@
 	@rm $@
+
+benchmark: benchmark.x
+
+benchmark.x: Benchmarks/benchmarks.cpp
+	@g++ $^ -o $@
+	@./$@
+	@rm $@
 	
 clean:
 	@rm -f *.x *.o a.out 
+	@rm -f Tests/*.x Tests/*.o Tests/a.out 
+	@rm -f Benchmarks/*.x Benchmarks/*.o Benchmarks/a.out
diff --git a/Tests/Makefile b/Tests/Makefile
deleted file mode 100644
index 574e6bb..0000000
--- a/Tests/Makefile
+++ /dev/null
@@ -1,22 +0,0 @@
-#A C++ fast and lightweight 3D vector library.
-#Optimized to be as fast as possible maintaining great usability.
-# 
-# * This file is part of the Vector3D distribution (https://github.com/cdelv/Vector3D).
-# * Copyright (c) 2022 Carlos Andres del Valle.
-# * 
-# *Vector3D is under the terms of the BSD-3 license. We welcome feedback and contributions.
-# *
-# * You should have received a copy of the BSD3 Public License 
-# * along with this program. If not, see <https://github.com/cdelv/Vector3D> LICENSE.
-# */
-
-all: test
-
-test: test1.x
-
-test1.x: Test1.cpp
-	g++ $^ -o $@ -lgtest
-	./$@
-	
-clean:
-	rm -f *.x *.o a.out