diff --git a/imgs/polygons/heptagon.png b/imgs/polygons/heptagon.png
index 8757a5c..d41d313 100644
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diff --git a/imgs/polygons/hexagon.png b/imgs/polygons/hexagon.png
index 6c4f0d7..436203e 100644
Binary files a/imgs/polygons/hexagon.png and b/imgs/polygons/hexagon.png differ
diff --git a/imgs/polygons/nonagon.png b/imgs/polygons/nonagon.png
index 13dca03..fe48ebe 100644
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diff --git a/imgs/polygons/octagon.png b/imgs/polygons/octagon.png
index 3170b15..653f43f 100644
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diff --git a/imgs/polygons/pentagon.png b/imgs/polygons/pentagon.png
index 547f054..09e9934 100644
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diff --git a/imgs/polygons/square.png b/imgs/polygons/square.png
index c8d6163..b047d28 100644
Binary files a/imgs/polygons/square.png and b/imgs/polygons/square.png differ
diff --git a/imgs/polygons/triangle.png b/imgs/polygons/triangle.png
index b7e2e67..fb3c119 100644
Binary files a/imgs/polygons/triangle.png and b/imgs/polygons/triangle.png differ
diff --git a/src/main.rs b/src/main.rs
index 8073743..986658c 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -7,17 +7,18 @@ fn polygon(corners_number: u32, steps_count: u32, output_path: &'static str) {
     let mut turtle = Turtle::new();
     let default_pos = defaults::position();
 
-    let degree = 360.0 / corners_number as f64;
-    let circumference = (corners_number * steps_count * defaults::STEP_LENGTH) as f64;
-    let radius = circumference / (2.0 * std::f64::consts::PI);
+    let side_length = turtle.step_length() * steps_count;
+    let pi = std::f64::consts::PI;
+    let circumscribed_circle_radius = side_length as f64 / (2.0 * (pi / corners_number as f64).sin());
+    let vertical_offset = circumscribed_circle_radius * (pi / corners_number as f64).cos();
 
     turtle.set_pos((
-        default_pos.0 - (turtle.step_length() * steps_count / 2) as i32,
-        default_pos.1 - radius as i32
+        default_pos.0 - (side_length / 2) as i32,
+        default_pos.1 - vertical_offset as i32,
     ));
     
     for _ in 0..corners_number {
-        turtle.forward_right(steps_count, degree);
+        turtle.forward_right(steps_count, 360.0 / corners_number as f64);
     }
     turtle.save(output_path).unwrap();
 }