Update app.py

app.py

@@ -142,7 +142,7 @@ def plot_triangle(vertices, properties):
     ])
     handles.extend([
         plt.Line2D([0], [0], linestyle='-', color='blue', markersize=6, label=f"Side {side}: {length:.1f}")
-        for side, length in zip(['a = BC', 'b  = AC', 'c = AB'], [a, b, c])
+        for side, length in zip(['a = BC', 'b = AC', 'c = AB'], [a, b, c])
     ])
     handles.extend([
         plt.Line2D([0], [0], marker='o', markerfacecolor='white', markeredgecolor='red', markersize=5, linestyle='none', label=f"Incircle radius: {radius_in:.1f}"),
@@ -227,10 +227,10 @@ def main():
         for point, label in [('1', 'A'), ('2', 'B'), ('3', 'C')]:
             cols = st.sidebar.columns([3, 3])
             coordinates[f'x{point}'] = cols[0].number_input(
-                f"X{point}", min_value=-100.0, max_value=100.0, step=0.1, format="%.3f"
+                f"X{point}", value=0.0, min_value=-100.0, max_value=100.0, step=0.1, format="%.3f"
             )
             coordinates[f'y{point}'] = cols[1].number_input(
-                f"Y{point}", min_value=-100.0, max_value=100.0, step=0.1, format="%.3f"
+                f"Y{point}", value=0.0, min_value=-100.0, max_value=100.0, step=0.1, format="%.3f"
             )
         return coordinates