Update app.py

app.py

@@ -70,7 +70,7 @@ def plot_triangle(x1, y1, x2, y2, x3, y3, I_x, I_y, Ux, Uy, G_x, G_y):
     vertices = [(x1, y1), (x2, y2), (x3, y3)]
     for i, (vx, vy) in enumerate(vertices):
         ax.scatter(vx, vy, color="blue", zorder=5)
-        ax.text(vx, vy, f"V{i+1} ({vx:.1f}, {vy:.1f})", fontsize=10, ha="left", va="bottom", color="blue")
+        ax.text(vx, vy, f"P{i+1} ({vx:.1f}, {vy:.1f})", fontsize=10, ha="left", va="bottom", color="blue")
     
     key_points = [
         (I_x, I_y, "Incenter"),